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清扫住客房要注意哪些问题

2023-08-23 03:08:24
TAG: 问题
共4条回复
慧慧

1、进入客房应严格遵守进房的有关规定。如客人在房内时,应礼貌地询问是否可以清扫客房,征得同意后,方可进房。清扫过程中动作要轻,速度要快,不能与客人长谈;如果客人有问话,应注视客人并作回答;如客人不同意清扫客房,则应将房号和客人要求清扫的时间写在工作表上,以免遗忘。

2、清扫客房时,客人的文件、杂志、书刊等可以稍加整理,但不能弄错位置,更不准翻看;客人的物品如照相机、计算器、笔记本、钱包之类不能随意触摸;女性用的化妆品即使用完了,也不得将空瓶或纸盒扔掉。

3、客人放在椅子上或床上的衣服,外衣可挂衣柜里,内衣、睡衣简单折叠后放在床上;女宾住的房间,不要轻易动其衣物;擦拭衣柜、行李柜时,不要将客人的衣物弄乱、弄脏,也不要挪动客人的行李,一般只要擦去大面积的灰尘即可。

给宾客提供食宿的商业场所

酒店(又称为宾馆、旅馆、旅店、旅社、商旅、客店、客栈,中国作饭店、酒店等,马来西亚、新加坡等作酒店)其基本定义是提供安全、舒适,令利用者得到短期的休息或睡眠的空间的商业机构。

一般地说来就是给宾客提供歇宿和饮食的场所。具体地说饭店是以它的建筑物为凭证,通过出售客房、餐饮及综合服务设施向客人提供服务,从而获得经济收益的组织。酒店主要为游客提供住宿服务、亦生活的服务及设施(寝前服务)、餐饮、游戏、娱乐、购物、商务中心、宴会及会议等设施。

FinCloud

1.准备清洁工作车

(1)客房服务员检查工作车是否清洁,客用品及清洁工具是否备齐

(2)将工作车推至要打扫的房门旁,挡住房门,紧靠墙面(若客人在房内,不能全挡住房门,要停在走廊中间)

2.敲门进房

(1)客房服务员用手敲门三下,时间间隔为半秒钟,敲门5秒钟后应根据客人的语言报身份“客房服务员”或英文“Housekeeping”

(2)再按一下门铃,同时重复报身份

(3)后退半步,以方便客人从窥视镜中看清来访者

(4)在门外等候10秒钟,倾听房内动静并从窥镜中查看有无灯光

(5)在确认房内无动静后重复以上的敲门动作

(6)如客人来开门,先向客人问好,然后简洁清楚地说明来意,征得客人同意后才可进房间

(7)如敲门后无应声,确定房内无任何声响后,用钥匙开启门锁,把门轻轻推开大约5cm的缝隙,再一次明报身份,进入房间后,可能有以下几种情形

①如发现客人仍在熟睡中或正在浴室中,应轻声关上房门,然后离去

②如发觉客人刚睡醒,未来得及更换衣服,应向客人致歉并关门离去

③如客人已睡醒并已穿好衣服,则应说出你的来由并根据客人的意见提供服务

④如房内没有客人,则可立刻进行服务(服务期间,将房门全部打开)

3.检查房内设施

(1)客房服务员在工作表上登记进房时间,将备用卡插进取电插座,挂上“正在打扫”牌,在卫生间门口铺上小垫毯

(2)将客房里的灯具开关打开,检查所有的灯具,检查后应随手将灯关上。一旦发现灯泡和开关损坏,应立即通知工程部维修或更换

(3)将窗帘全部打开,让光线射进房内,并检查窗帘有无损坏、污迹皱折、拉关是否顺畅

(4)若房内有异味,可打开窗户,开大空调,同时检查空调开关是否正常

(5)检查小酒吧,如客人饮用饮料,应填写酒水单并及时补齐酒水

4.清理垃圾

(1)客房服务员撤走房内用餐的餐车、餐具,送到工作间,打电话通知送餐员收取

(2)客房服务员在房内按顺时针方向清理,捡起地上物品,稍加整理放到桌上

(3)清倒垃圾桶及烟灰缸(清倒前检查垃圾桶内是否有文件及有价值的物品;烟灰缸内的烟头是否熄灭)

(4)将烟灰缸放入洗手盆,浸泡在热水中,用清洁剂洗涤擦干后放回原处

(5)清洗客人用过的茶杯、酒杯并放回原处

5.做床

6.抹尘、补用品

(1)客房服务员遵循从上到下,按顺时针或逆时针方向抹尘

(2)在抹尘过程中,要注意以下几点

①可将客人的文件、杂志、书报稍加整理

②擦拭行李架时,一般不挪动客人行李,只擦去浮尘即可

③对于女性用的化妆品,只需稍加整理,但不要挪动位置,即使用完的化妆品也不得将空瓶或包装盒扔掉

④不要触摸客人的照相机、笔记本和钱包等物品

(3)在抹尘过程中,还要检查房间用品,如有缺少,依次补齐,按标准将家具和物品移位

7.清洁卫生间

(1)保洁员打开卫生间的灯,打开换气扇,将清洁工具放进卫生间

(2)放水冲马桶并倒入清洁剂

(3)将客人用过的毛巾、浴巾等布草撤掉,放入工作车的布草袋内

(4)用垃圾桶收走垃圾杂物并倒入工作车的垃圾袋内

(5)用海绵蘸上清洁剂将台面、洗手盆清洁干净,然后用清水冲净,用抹布擦干。用海绵蘸少许中性清洁剂擦拭洗手盆不锈钢器件的表面,将电话副机、毛巾架等擦干净

(6)在镜面上喷少许玻璃清洁剂,然后用干抹布擦亮

(7)将浴缸旋塞关闭,放入少量热水和清洁剂,用海绵从墙面到浴缸里外彻底清洁;开启浴缸活塞,放走污水;打开水龙头,放水冲净;将浴帘放入浴缸加以清洁,再把墙面、浴缸、浴帘用干布擦干,最后用海绵蘸少许中性清洁剂擦拭金属器件(水龙头、浴帘杆、晾衣绳等),消除其污垢、水斑,并随即用干抹布擦亮

(8)用马桶刷清洁马桶内部,并用清水冲净。用专用抹布清洁水箱、座沿、盖子内外侧及底座等,最后擦拭卫生纸架

(9)按规定的位置摆好毛巾、浴巾和香皂、牙具、浴帽、浴液、发液、梳子和卫生卷纸等物品

(10)从里到外退边抹净地面,特别注意对地漏处的清洁,最后擦干地面,保证无污渍、无毛发、无水迹

(11)检查是否有漏项和不符合规范的地方,然后带走清洁工具,将卫生间门半掩,关灯

8.吸尘

(1)客房服务员如发现地毯上有污迹应先清除,不能清除的应向领班汇报

(2)吸尘时,要按从里到外的顺序逐一吸尘(注意吸除家具、床底下的灰尘)

9.检查房间

(1)清洁完毕,客房服务员将空调调控开关调回原来位置

(2)检查整个房间是否清洁、美观、舒适

(3)将抹布等清洁用品放回车内并将吸尘器推至门外

(4)关灯、锁门,再用手轻推一下检查门锁是否已锁好,登记作房时间

(5)若客人在房间内,应向客人表示谢意,退后三步再转身离开房间,轻轻将房门关上

大鱼炖火锅

我不知道你是做培训用还是自己工作用,我就大概给你说说吧。

客人在的时间,你可以咨询着去做这些事情,把属于酒店的东西给规整一下,私人的问询一下,私人的一般不会让你动的,不要的会主动给你,你把改做的做好,切记,你每一块抹布的用途一定要清楚,并且一定要分开,不要拿客用东西和布草做什么事情。

客人不在就好办了,把垃圾收拾一下。东西简单的规整一下,卫生做好就行了,切记任何纸片都不要给扔了,特别是带字的。

你要是培训师,我们客用交流一下心得,你要是服务员,客用随时像我请教,我说的这些都是针对高星级酒店的服务的。

可乐

1 有无遗留品

2 设备完好否?特别电器类、接线板等

3 布草是否完好 干净

4 角落、床底卫生

5 其他

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2023-08-15 04:32:411

去澳门应聘酒店客房服务,不会粤语和英语会成功吗?

如果不会粤语和英语,在澳门应聘酒店客房服务员的差事,严重地影响你跟入住客人的交流,自然会影响你对入住客人的服务质量。所以你只能做一些吃苦受累的体力活(如洗衣房等)。如果你是女孩子,退休老师建议你还是在沿海城市的酒店找一份工作吧!祝你好运。
2023-08-15 04:32:521

客房服务员可不可以有别的称呼,比如客房管家

客房服务员可以有别的称呼。根据查询相关公开信息显示:一些高档酒店中,客房服务员通常被称为客房管家,因为他们不仅负责打扫客房,还要提供更加全面的服务,如整理客人的衣物、洗涤客人的私人物品等。客房服务员是酒店中负责打扫和维护客房的员工,为客人提供全方位服务。
2023-08-15 04:32:591

咖啡英文单词

咖啡英文单词是coffee。咖啡(英文名:coffee),指采用经过烘焙过程的咖啡豆所制作冲泡的饮料,口感方面以酸、甜、苦、咸四种滋味为主,气味则根据咖啡豆品种、冲泡方式等呈现多种变化。作为人类社会流行范围最为广泛的饮料之一,与可可、茶被称为世界三大饮料。咖啡起源于非洲埃塞俄比亚,通常被分为阿里比卡种与罗布斯塔种。在成熟后需经历采摘、处理、烘焙等程序,根据制作方式产生多种饮品形式,如浓缩咖啡、拉花咖啡、单品咖啡、速溶咖啡、瓶装饮品等。咖啡由于其所含分子或存在致癌物质等因素而存在对人体有害的争议,然而咖啡多样的风味及其造就的咖啡文化、经济效应增产则带来了深远影响。咖啡的英语句子合集:1:There was a smell of coffee pervading the atmosphere.空气里弥漫着咖啡的香味。2:I"d like some coffee with a laced brandy.我想喝一点加少量白兰地的咖啡。3:I have coffee after dinner,as is my usual practice.我饭后喝咖啡,这是我的习惯。4:Here,have some coffee on me.来,我请你喝咖啡。5:He used to have a cup of coffee preparatory to his work.在工作之前,他总要喝上一杯咖啡。6:Which blend of coffee would you like?你要哪一种混合咖啡?7:Have another coffee on me.再来一杯咖啡,我请客。8:I love the delightful odour of freshly roasted coffee beans.我喜欢刚烘烤好的咖啡豆的清香气味。9:Fresh coffee is superior to instant coffee.现煮的咖啡比速溶咖啡好。10:Call room service and ask for some coffee.叫客房服务员送些咖啡来。
2023-08-15 04:33:081

职业英语水平分几级?

专业四级和专业八级
2023-08-15 04:34:002

酒店管理知识

酒店管bai理主要学习:《现代酒店du管理》 《餐饮服务与管理》、八zhi大菜系、食品雕dao刻、糖艺面塑、西点西餐、酒店财务管理、酒店实用英语等,毕业生可在星级酒店、旅游行政管理部门、行业协会、旅行社、旅游交通企业、景区、会展等单位从事行业管理、等工作
2023-08-15 04:34:143

什么是客房服务员?

客房服务员主要指为宾馆或酒店的客房提供清洁及为住户提供生活帮助的服务人员。一、客房服务员的主要工作:1、清洁并检查客房。2、补充用品。3、为客人提供服务。4、清洁用品使用及保养。5、检查客人遗留物及客房内贵重物品。6、确保工作区域的安全。二、客房服务员的职业道德:1、热情友好,宾客至上。2、真诚公道,信誉第一。3、文明礼貌,优质服务。4、以客为尊,一视同仁。5、团结协作,顾全大局。6、遵纪守法,廉洁奉公。7、钻研业务,提高技能。
2023-08-15 04:34:401

难伺候的“上帝” 某家宾馆,一次来了几位美国客人,或许是不了解中国,或许是抱有偏见,他们对宾馆的客房

服务行业的法则:1、顾客永远是对的;2、如果顾客真的错了,请参照上一条。
2023-08-15 04:34:563

客房服务员干什么的?

客房服务员主要指为宾馆或酒店的客房提供清洁及为住户提供生活帮助的服务人员。其主要工作包括:清洁并检查客房、补充用品、为客人提供服务 、清洁用品使用及保养、检查客人遗留物及客房内贵重物品、确保工作区域的安全。客房服务员这个职位要求比较高,要求英语方面的无障碍交流,在给客人提供服务的同时,也需要给负责区域的客人推介相关的消费产品比如各式点心、咖啡、酒水以及岸上观光服务。基本薪水和小费都会比较高,相对应的要求也是最严格的,建议没有相关工作经验的英语不是很出色的初次登轮的学员不要选择。扩展资料工作步骤:1、两班交接,按交接班程序交接,交接内容,查房态,房间,及公共房间物品,设备设施及宾客投诉,卫生,工程,安全问题。整改事项。2、 检查设备设施,上报工程问题。3、 清理本区域房间和公共区域的卫生。4、倒班用餐,每班30分钟,注意用餐的纪律,杜绝浪费现象。5、清理本区域房间和公共区域的卫生。6、站位,迎接宾客,微笑,使用统一服务用语。7、填写交接班本,准备交接。8、 两班交接,按交接班要求交接。9、 开班后例会,点名,总结当班工作情况,集体有序离开营业区。参考资料来源:百度百科-客房服务员
2023-08-15 04:35:061

酒店实习毕业论文怎么写????

我去也是因为实习,老师让写实习论文,实在没会写,是我一个同学介绍在汇博在线上写的,信誉和质量还不错,你去问问他们,地址你在百度搜汇博在线就可以找到了。
2023-08-15 04:35:262

五星级酒店客房服务员面试注意什么

你的打扮完全OK。2,专业知识你也没有问题,也有经验,应该问题不大。可以说是相对较好的了。我们这有很多都是小酒店来的。有的人也不是专业学校毕业的。3,就我的经验而言,他会问你一些个人情况,对酒店的理解,对服务业的理解,你对未来的规划打算,对该酒店看法等等。如果你说你英语好的话他会要求你用英语做自我介绍,但是通常情况下你需要知道客房内部设施物品的英文名字,还有几句简单的会话。这样就算是基本过关。4,酒店业人士变化比较大,他们比较害怕那种干两天就走的人。人事部经理那关比较好过,到了部门经理他一般会给你说工作很辛苦之类的话来试探你。你一定要说你能吃苦愿意从基层慢慢做起,能坚持下来。说话语气坚定一点。说实话其实酒店都很缺人,因为真的很辛苦。
2023-08-15 04:35:371

请问做酒店客房部的服务员要考什么证

一般都是培训完就上岗很少考证的当然,如果有客房服务证更好呵呵,我就有客房服务证
2023-08-15 04:36:037

客房服务员是干什么的

客房服务员是为宾馆或酒店的客房提供清洁及为住户提供生活帮助的服务人员。1.客房服务员应该是整个酒店里面最累的岗位,正常清洁一间客房的标准时间为30分钟,客房服务员每天清洁房间基数为10-12间,超过基数后每多清洁一间客房,按房态不同,提成也不一样。2.客房服务员下班前还得对工作间、布草间、消毒间进行整理,撤换出来的脏布草还得交付给洗衣房并登记数量,还有可能需要接收送洗回来的布草。还要写好交接班,并交还清洁卡,对讲机,并与中班交班。3.客房服务员也有男性的,并且有很多非常优秀的男性客房服务员。客房打扫是个力气活,男性力量大。只是,大家潜意识里都觉得打扫卫生家务是女性的活,愿意去从事这项工作的男性比较少而已。培训要求1、培训期限全日制职业学校教育,根据其培养目标和教学计划确定。晋级培训期限:初级不少于70标准学时;中级不少于80标准学时;高级不少于100标准学时。2、培训教师培训初级客房服务员的教师应具有本职业中级以上职业资格证书;培训中、高级客房服务员的教师应具有本职业高级职业资格证书或本专业中级以上专业技术职务任职资格,同时具有2年以上的培训教学经验。3、培训场地设备教室、服务台(配备电脑)、标准客房(或模拟标准客房)以及相关教具及设备。
2023-08-15 04:37:221

客房服务员英文 客房服务员英文怎么说

1、客房服务员:room service worker; 2、[例句]我将马上派客房服务员到您的房间为您清扫。I"ll send a housemaid to your room and have it cleaned up for you at once.
2023-08-15 04:37:501

什么是客房服务员?客房服务员是做什么的?

  客房服务员从事的工作主要包括:   (1)在客房区域迎候宾客,办理住宿和访客登记手续;   (2)办理住宿宾客委托事项;   (3)客房送水,补充客房酒水;   (4)整理和清洁客房和楼层区域的卫生,消毒器皿;   (5)补充客房和卫生间用品;   (6)收发洗涤客衣;   (7)维护客房、卫生间设备、设施,负责报修;   (8)保持客房区域的安静,遇有险情和异常现象及时处理并上报;   (9)进行客房日常管理与成本控制。   文章来源:网络收集
2023-08-15 04:38:032

如何提高酒店会议服务质量论文提纲

一.前言(一)实习单位介绍1、实习单位:xxxxxx酒店xxxxxx酒店 —— 位于xx省xx市xx路,是按照x星级标准建造、xxxxxx式酒店。酒店背倚郁郁葱葱的xxxx,面朝xxxxxx。整体占地面积达 20 万平方米,建筑面积达 7. 8 万平方米 ,富丽典雅的欧陆式建筑风格,使宾客感受到西方古典文化独特的神秘雅致。此外,酒店还特别引进了国外主题式酒店的独特意念,创造出超凡的品味。xxx酒店由xxx集团斥资约xx亿元重金兴建,充分发挥“商务、度假、会议”的功能优势,在完善xxxx楼盘配套的同时从容开展商务和度假活动,推动xxx“给你一个五星级的家”的品牌品质的持续提升。2、实习部门:前厅礼宾部前厅部包括:接待处、礼宾部、总机、商务中心、订房部共五个分部门,酒店实行部门经理负责制,由前厅经理统筹安排,各分部主任或分部经理管理本部门事务,与其他部门密切配合,合作完成工作。礼宾部作为宾客迎来送往在最重要的部门之一,分设行李生和酒店代表两个部分,由礼宾经理总体负责,下设行李生领班(3人)和行李生(11人),酒店代表主管(1人)资深酒店代表(1人)和酒店代表(4人)。(二)实习职位介绍酒店代表是代表酒店在机场、火车站等出入境口岸迎送客人,及时向客人推销酒店和宣传酒店的形象,影响着客人对酒店的印象。酒店代表的主要任务是提供快捷妥当的服务,将客人接回酒店入住或送机送车,作为最早和最后接触客人的酒店员工,把握每一个机会不失时机地为酒店作宣传,争取更多的客源,负责保护客人的行李和人身安全,为客人提供酒店内外设施、环境咨询,为客人提供尊贵的礼宾服务。二 实习内容(一)酒店代表日常工作1、利用xxx酒店的“千里马酒店管理系统”查阅每天的“接机、接车服务报表”,详细登记当天的服务需求情况并按中文、英文、日文用A3纸打印成2/6页“SIGNBOARD”,在纸后面写上接机(车)日期、航班号、始发地、预计到达时间、人数、是否收费等信息。2、查询航班信息,确定时间和到达情况,报告主管进行车辆和人员安排。3、带齐所需物品出车,在机场(车站)最后确认航班到达时间和出口,提前到达出口处准备迎接客人。4、接到客人,确认其身份,核对无误之后带其乘车回酒店,安排登记和入住事宜。5、在礼宾部柜台为客人提供咨询、寄存等礼宾服务。(二)酒店代表的VIP/大客户接待工作1、与销售部相关人员核对当天预计抵达的VIP人数和姓名。2、准备相关物品,检查是否有遗漏。3、向有关部门了解客人信息,准备接待事宜。4、视客人要求和酒店安排,与订房部、销售部、接待处等部门共同安排客人到站活动和酒店活动。(三)酒店代表交易会期间的工作1、打印“接机接车报表”和“预抵报表”,核对接机接车报表和SIGNBOARD。2、带齐所需物品,与机场(车站)工作人员联系协商接站事宜。3、安排客人休息区域,为客人提供酒店信息咨询等服务。4、与酒店密切联系,负责机场与酒店之间的穿梭巴士的调度工作。--------------------------------------------------------------------------------三.实习主要收获和体会(一)实习收获1、服务意识的提高对于酒店等服务行业来讲,服务质量无疑是企业的核心竞争力之一,是企业的生命线.高水平的服务质量不仅能够为顾客留下深刻的印象,为其再次光临打下基础.而且能够使顾客倍感尊荣,为企业树立良好的品牌和形象. 通过酒店组织的培训和平时部门的强化练习,锻炼了我的服务意识,养成了面对客人泛出微笑的好习惯;学会了用标准的礼仪礼貌待客;明白了学好外语的重要性。2、服务水平的提高经过了三个多月的酒店实习,使我们对酒店的基本业务和操作有了一定的了解,礼貌是一个人综合素质的集中反映,酒店更加如此,要敢于开口向人问好,在向人问好的过程中还要做到三到:口到,眼到,神到,一项都不能少。对于客人的要求,要尽全力去满足,尽管有些不是我们职责范围的事情,也要尽力帮其转达;尽管有些要求不合理的不能办到,都要用委婉的语气拒绝,帮他寻求其他解决方法。印象最深的是为酒店的日本客人(大多数是来自酒店大客户——本田公司的)服务,他们通常是不太会说英语的,所以,我们要从他们的动作和片言只句中猜到3/6页他想要做什么并快速帮他办好。例如:当客人用蹩脚的英语说到AIRPORT时,就要猜到他是想到机场,要我们安排免费的送机服务。接下来就要为他们提供乘车预约表并接受他的信息再交由主管排车了……3、英语水平的提高在五星级的涉外饭店中,英语的实际应用能力包括听、说、写的能力是特别重要的。在接触来自世界各国的客人的过程中,英语作为国际通用语言发挥了它的重要性,没有它,我和客人就没法沟通,更提不上为他(她)服务。交易会期间,客人们从世界各地赶过来,就要我们用英语为他们介绍,接受他们对会馆、天气、地理、购物等信息的咨询,及时向客人推销xx和宣传酒店的形象。(二)实习体会1、实习不是体验生活实习占用了我们大学里的最后一个暑假的时间,但是这和以往打的暑期工不同,在工作过程中,我们不是单纯地出卖自己的劳动力去换取报酬,而是当自己是酒店的一员,和各部门同事密切合作维护酒店形象和创造最大的利益。实习过程中,我们不会因为还是本科在读生而受到特别的礼遇,和其他心员工一样,从酒店基本知识和本职工作开始了解,偶尔做错事,也不会有人偏袒。2、实习是一个接触社会的过程通过这次实习,我比较全面地了解了酒店的组织架构和经营业务,接触了形形色色的客人,同时还结识了很多很好的同事和朋友,他们让我更深刻地了解了社会,他们拓宽了我的视野,也教会了我如何去适应社会融入社会。3、实习期与xxx酒店的关系作为酒店的一员,穿上了制服,就要处处维护xxx酒店的权益,要把自己和酒店紧密联系起来,要熟悉酒店的信息,要另自己的一言一行都要代表酒店的利益,时刻为酒店做宣传,提高酒店和自己的形象。4、实习与就业实习过程中,让我提前接触了社会,认识到了当今的就业形势,并为自己不久后的就业计划做了一次提前策划。通过这次实习,我发现了自己与酒店的契合点,为我的就业方向做了一个指引。另外,xxx酒店的人才培养制度为我们提供了大量的学习机会,为我们提供了就业机会。实习实际上就是一次就业的演练。四 实习想法和建议(一)实习想法初步接触了酒店业和xxx酒店,发现人员流动量大是整个行业的问题。酒店业的从业者素质参差不齐,从中学文化到研究生甚至更高文化的都有;同时,员工的年龄跨度很大,小的刚满18岁,但是有的部门普通员工已经年过半百了。年龄和文化程度的差异,决定了酒店在效率上的差异,如:客房服务员的英语水平普遍不高,在客人需要某些客房服务时,他们往往听不懂其要求而要前台或者服务中心同事的帮助,将电话转来转去耽误了时间,还会造成客人的不满。
2023-08-15 04:38:141

餐饮服务员资格证书 客房服务员资格证书考试英语是怎么说的?有取得了人帮我看看吗?很急啊~谢谢了

你可以选择考考PETS(公共英语) http://www.pets12345.com/ 达到2级就可以了。。希望能够帮上你。
2023-08-15 04:38:563

常用酒店服务员英文名

男(WAITER) 女(WAITRESS) 汉语简读 威特儿 特儿连读
2023-08-15 04:39:472

餐厅服务员的英文怎麼写

the restaurant waiter
2023-08-15 04:40:121

求爱迪生的英文资料

Thomas Edison lost his first job.For the next five years he went around the country from job to job.At last Edison went to New York.He had little money.He could not buy enough food to eat.He had no place to sleep. For many days Edison looked for work.He was hungry.At last he found work fixing machines.He could fix the old machines.He also made new ones.The headman liked Edisons new machines.He was going to give Edison $40,000 for them.Edison would now have money to do what he wanted. Thomas Edison was then 23.He used the money to build a shop in New Jersey.He had many people working for him.But he worked more than any of them.He rested very little.Soon he was making more than 40 new things at one time. In 1876 Alexander Graham Bell made a telephone.But it could carry voices only a little way. Edison wanted to make a better telephone.He soon made one.It could carry voices a long way. 爱迪生于1847年2月11日诞生于美国中西部的俄亥俄州的米兰小市镇。父亲是荷兰人的后裔,母亲曾当过小学教师,是苏格兰人的后裔。爱迪生7岁时,父亲经营屋瓦生意亏本,将全家搬到密歇根州休伦北郊的格拉蒂奥特堡定居下来。搬到这里不久,爱迪生就患了猩红热,病了很长时间,人们认为这种疾病是造成他耳聋的原因。爱迪生8岁上学,但仅仅读了三个月的书,就被老师斥为“低能儿”而撵出校门。从此以后,他的母亲是他的“家庭教师”。由于母亲的良好的教育方法,使得他对读书发生了浓厚的兴趣。“他不仅博览群书,而且一目十行,过目成诵”。8岁时,他读了英国文艺复兴时期最重要的剧作家莎士比亚、狄更斯的著作和许多重要的历史书籍,到9岁时,他能迅速读懂难度较大的书,如帕克的《自然与实验哲学》。10岁时酷爱化学。11岁那年,他实验了他的第一份电报。为了赚钱购买化学药品和设备,他开始了工作。12岁的时候,他获得列车上售报的工作,辗转于休伦港和密歇根州的底特律之间。他一边卖报,一边兼做水果、蔬菜生意,只要有空他就到图书馆看书。他买了一架旧印刷机,开始出版自己的周刊——《先驱报》,第一期周刊就是在列车上印刷的。他用所挣得的钱在行李车上建立了一个化学实验室。不幸有一次化学药品着火,他连同他的设备全被扔出车外。另外有一次,当爱迪生正力图登上一列货运列车时,一个列车员抓住他的两只耳朵助他上车。这一行动导致了爱迪生成为终身聋子。 1862年8月,爱迪生以大无畏的英雄气魄救出了一个在火车轨道上即将遇难的男孩。孩子的父亲对此感恩戴德,但由于无钱可以酬报,愿意教他电报技术。从此,爱迪生便和这个神秘的电的新世界发生了关系,踏上了科学的征途。
2023-08-15 04:32:201

英文求职信

【实用】英文求职信范文六篇   光阴的`迅速,一眨眼就过去了,又到了求职找工作的时候,此时此刻需要开始写求职信了哦。你真的懂得怎么写好求职信吗?下面是我帮大家整理的英文求职信6篇,仅供参考,希望能够帮助到大家。 英文求职信 篇1 Dear Sir / Madam:   Hello!   I am a senior student of Beijing University, I am about to enter the community of the future is full of expectations, I believe "Wellbegunishalfdone", (a good beginning is half the battle). I hope your success is my starting point, I had the honor along with your company to create a brilliant tomorrow.   I was born in the beautiful scenery of the border town - Riverside, 1997 I was admitted to the honors of Economics and Management School of Peking University, from opening a new chapter in my life. School class since I served as the group secretary, busy working not only to develop and exercise my ability to work, more exercise my ability to solve problems, so I can be calm when faced with the problem analysis, thoughtful, and all this for me professional choices have had a profound impact.   I do their work, but also actively participate in the activities organized by the school and encourage students to participate, for their advice; in everyday life, I was able to closely unite students, I believe that the collective is a powerful force, only if we pull together in order to work well.   Socialist modernization is needed is a comprehensive quality management personnel, so I have to learn professional knowledge, the main English and computer, in English, I am training to strengthen my listening, speaking, reading and writing ability; in computers, I start from the basics, to further understand the function OFFICE, INTERNET and also taught himself the basics, can be used flexibly. After the election, the professional, in order to broaden their knowledge, I also participated in the study of computerized accounting and master the basic applications and accounting software applications such as EXCEL. In order to make their own professional knowledge to mastery learning, I also studied the case of MBA-related materials, such as strategic management, corporate governance, financial management, capital operation, and apply it to their internship work.   "Sea diving, day of His Career," I hope that your company can give me a chance to display their talent, I will work hard, study hard and expertise, the company live up to my expectations.   Sincerely,   Salute!   xxx   xxx xx month xx day in 英文求职信 篇2 Dear sir,   On my graduation from college this fall, I am desirous of securing a position that will offer me opportunity in the field of import and export trading. Knowing something of the scope and enterprise of your huge export department, I thought perhaps you would keep me in mind for a possible opening.   I am strong and healthy, and shall be twenty years of age in September next year. At present I am a student in the college of XX but I shall graduate from the college this coming July, finishing the requirements in three years, I have had no business experience, but my college record has been good. A copy of my antecedents is enclosed for your reference.   Dr. Chen, President of the college of XX will be glad to tell you more about my character and ability, I shall be glad to call at any time for an interview.   best regards   yours faithfully 英文求职信 篇3 Respect leadership: Hello!   First please allow me to extend the sincere regards and the good wish to you! In spite of being very busy heartfelt thanks you in to glance through my this material, and wishes the expensive unit enterprise to be prosperous, progresses day by day! I am electronic information project specialized 20xx sessions of graduates, learned in the near future your firm is advertising for the talented person, I hoped can arrive has the opportunity to your firm work.In school period, I study the specialized knowledge diligently, and   invested the huge enthusiasm and the energy for it.While studies the textbook knowledge earnestly, I participate in school inside and outside practice positively, and has obtained some result. If monolithic integrated circuit development design, aspects and so on PCB Layout as well as homepage design. The university four years let my English proficiency have progress,And smooth passed the national English six levels of tests,Had certainly certainly has listened to, to say, to read, writes ability,Has the reading specialized literature English foundation of basic skills.   I have the good computer knowledge and application ability, can grasp the basic application software skilled the use, and can use languages and so on C, assembly, VB, HTML carries on the programming. Moreover I also can using Multisim, Protel, Pspice, Auto CAD and so on the specialized software carry on   the correlation work,And many times participated in the project practice which in the school organizes.I have studied some knowledge using after school which the related homepage design, the plane design as well as the video frequency pick arrange,Can skilled manufacture the homepage using the homepage three swordsmen,And can use imagery processing softwares and so on the photoshop, ACDSee to carry on the related design work,Has uses Adobe premiere the pro software editor complete video frequency plan the experience.I longed for study has uses, to long for own knowledge can obtain the practice examination, looked forward to the practice will be able to eich my work experience and the ability glorious future.   "The great ambition can sometimes, directly link up the cloud sail to aid the sea", I hope alliance your firm sincerely, I can surely by full warm and the tenacious disposition diligent work, with colleague absolute sincerity cooperation, for expensive unit"s development own one"s pygmy effort.   Along with letter enclosed resume and other material, if must a deeper understanding, hope for your interviewing! 英文求职信 篇4 Beloved leaders:   Hello!   First of all, I sincerely appreciate your taking the time in his busy schedule to read my letter of the ordinary job-seekers. I aim to apply for the the financial auditor on your company. my introduction is following.   I am a student from the department of thermal engineering in Tsinghua university and I double majored in economics. our school always pay a lot attention to our ability training so that I think I can manage something easily. as a result of the baptism of four years, I think that I have a solid theoretical foundation for knowledge and professional skills. “think big and try bravely” is the motto I believed for all these student"s age. To be higher is my aim because that the sense of responsibility always forces me to act better when I get a job.   While studying at the school, in addition to my master the theoretical knowledge of the profession, but also of other elective courses, take full advantage of after-school time and school library resources, extensive knowledge of drawing a large number of extra-curricular. In my continued efforts, the top academic performance, has won various honors in rating schools, the state scholarship. At the same time to participate in the school orchestra, playing musical instruments to learn, appreciate the art of washing people, enrich my college life.   I just want to set foot on as a community college graduates, to work or lack of life experience may make you hesitate to employ me, but if you can give me a chance to do it. I will try my best to behave better. I have been convinced that the "where there is a will,there is a way" I hope you can give me a chance, your recognition will be the glory of my life!   Again, thank you for reading my cover letter, no matter the outcome, please accept my heartfelt good wishes! I wish you successful work!   Sincerely   Salute!   Zhang xiaoming   Department of thermal engineering   Tsinghua university   BEijing of China 100084 英文求职信 篇5   dear sir,   two years as a senior clerk in *sales department of *the great wall company have, i believe given me the experience to qualify for the job you advertised in 51job website.   since XX i have been responsible for *all office details in the administration of sales, including writing much of the correspondence. in the course of my work, i have become familiar with the various sales territories, and have also in my spare time experience of handling business problems other than my proper sphere.   the years before i was employed at the great wall, i was a secretary for *long dragon, an accounting firm. there i became familiar with accounting terms and procedures.   i was graduated at *wuhan university, in june 1997. i am *twenty-seven years of age and single.   i am leaving my present position because i can use my capabilities more fully in a position with wider scope. my present employer knows of my ambition and is helping me to find a new place.   may i see you at your office to tell you more about myself and show you just how well i can do the work you require.   yours faithfully, 英文求职信 篇6   Dear Mr Ho   Application for the position of Public Relations Manager.   Please accept this letter as an application for the above position as advertised in the JobsPower.com on January 5.   As the Assistant Public Relations Manager at XYZ Company for the past five years, I have assisted in various public relations functions and activities, arranged and co-ordinated press conferences to promote corporate image. I have also provided logistics support to press briefings, communication programmes and other marcom functions.   For the two years prior to XYZ Company, I served as the Public Relations Officer at Any Arts Centre, and has gained experience in editing a variety of performance publications (both newspapers and magazines), writing a lot of feature articles, press releases, brochures, and assisted in the production of staff newsletters.   I look forward to discussing my background and experience in detail with you and would be pleased to attend a personal interview. Thank you for your consideration.   Yours sincerely ;
2023-08-15 04:32:201

bytrs=32 time=30ms ttl=252 是什么意思?

32 是发送的字节数,30ms是响应时间,TTL是数据包从去到返回的所生存的时间.而根据LLT后面的数字我们还可以判断对方的操作系统 。比如返回的TTL=128对方主机则可能是WIN2000或WINXP系统,若TTL=250或TTL=64对方主机系统则可能是UNIX/LIUX操作系统 而TTL=32对方则可能是WIN95/98系统.为什么说他可能呢?因为通过注册表可以来修改主机的操作系统.类型 你的返回的是252,那么可以判断基本是unix系统。
2023-08-15 04:32:231

生石灰可以做食品干燥剂吗

  生石灰可以做食品干燥剂,因为生石灰吸收空气中的水份后可以变成熟石灰,这样就能够避免食物受潮。在日常生活中,应用的最多的还是活性氧化铝与硅胶,它们是通过物理法进行吸水处理的。而生石灰或者熟石灰作为干燥剂通过化学方式吸收水分子并改变其化学结构,变成另一种物质,从而达到保持干燥的效果。   生石灰做干燥剂的原理是由于生石灰吸水后能变成熟石灰,化学反应式就是CaO+H2O=Ca(OH)2,生成的氢氧化钙能与空气中的二氧化碳反应生成碳酸钙和水,用过一段时间后,干燥剂中的物质最多有氧化钙、氢氧化钙、碳酸钙三种。
2023-08-15 04:32:241

喷泉专用泵的喷泉泵主要参数

型 号 流量m3/h 扬 程m 功 率kw 电 压v 频 率hz 最大外径mm 水泵高度mm QSP10-10-0.55 10 10 0.55 380 50 150 420 QSP15-7-0.55 15 7 0.55 380 50 150 420 QSP10-13-0.75 10 13 0.75 380 50 168 440 QSP15-10-0.75 15 10 0.75 380 50 168 440 QSP25-6-0.75 25 6 0.75 380 50 168 440 QSP10-13-0.75 10 13 0.75 380 50 168 440 QSP25-9-1.1 25 9 1.1 380 50 168 460 QSP40-6-1.1 40 6 1.1 380 50 168 460 QSP15-14-1.1 15 14 1.1 380 50 150 460 QSP65-5-1.1 65 5 1.1 380 50 150 460 QSP25-12-1.5 25 12 1.5 380 50 168 460 QSP40-8-1.5 40 8 1.5 380 50 168 460 QSP15-26-2.2 15 26 2.2 380 50 168 535 QSP20-20-2.2 20 20 2.2 380 50 168 535 QSP25-17-2.2 25 17 2.2 380 50 168 570 QSP40-13-2.2 40 13 2.2 380 50 168 560 QSP65-7-2.2 65 7 2.2 380 50 168 570 QSP40-16-3 40 16 3 380 50 168 530 QSP40-18-3 40 18 3 380 50 168 530 QSP45-16-3 45 16 3 380 50 168 530 QSP25-25-3 25 25 3 380 50 168 530 QSP32-20-3 32 20 3 380 50 168 530 QSP50-13-3 50 13 3 380 50 168 530 QSP65-10-3 65 10 3 380 50 168 610 QSP15-36/2-3 15 36 3 380 50 168 640 QSP30-25/2-3 30 25 3 380 50 168 640 QSP20-30/2-3 20 30 3 380 50 168 640 QSP15-40/3-3M 15 40 3 380 50 168 750 QSP40-21-4 40 21 4 380 50 168 600 QSP40-24-4 40 24 4 380 50 168 600 QSP65-13-4 65 13 4 380 50 168 600 QSP80-10-4 80 10 4 380 50 168 610 QSP100-7-4 100 7 4 380 50 184 650 QSP25-36/2-4 25 36 4 380 50 168 700 QSP15-45/3-4M 15 45 4 380 50 168 810 QSP15-52/4-4M 15 52 4 380 50 168 920 QSP20-40/2-4 20 40 4 380 50 168 700 QSP30-26/2-4 30 26 4 380 50 168 700 QSP40-28-5.5 40 28 5.5 380 50 225 620 QSP45-25-5.5 45 25 5.5 380 50 184 620 QSP60-20-5.5 60 20 5.5 380 50 184 620 QSP65-18-5.5 65 18 5.5 380 50 184 620 QSP120-10-5.5 120 10 5.5 380 50 205 760 QSP200-8-5.5 200 8 5.5 380 50 205 760 QSP220-5-5.5 220 5 5.5 380 50 205 760 QSP250-5-5.5 250 5 5.5 380 50 205 760 QSP40-30/2-5.5 40 30 5.5 380 50 168 740 QSP30-36/2-5.5 30 36 5.5 380 50 168 740 QSP30-40/3-5.5 30 40 5.5 380 50 168 840 QSP20-50/3-5.5 20 50 5.5 380 50 168 840 QSP20-54/4-5.5M 20 54 5.5 380 50 168 950 QSP15-65/4-5.5M 15 65 5.5 380 50 168 950 QSP65-25-7.5 65 25 7.5 380 50 184 740 QSP80-20-7.5 80 20 7.5 380 50 184 740 QSP100-17-7.5 100 7 7.5 380 50 205 780 QSP150-8-7.5 150 8 7.5 380 50 205 780 QSP250-8-7.5 250 8 7.5 380 50 205 780 QSP40-40/2-7.5 40 40 7.5 380 50 184 850 QSP80-24/2-7.5 80 24 7.5 380 50 184 880 QSP30-54/3-7.5 30 54 7.5 380 50 184 940 QSP25-65/3-7.5 25 65 7.5 380 50 184 945 QSP50-36/2-7.5 50 36 7.5 380 50 184 850 QSP20-78/6-7.5M 20 78 7.5 380 50 184 1360 QSP120-18/2-7.5 120 18 7.5 380 50 205 880
2023-08-15 04:32:241

相同规格的节能灯比白炽灯亮,为什么?

1000小时左右,它的工作原理是:当灯接入电路中,电流流过灯丝,电流的热效应,使白炽灯发出连续的可见光和红外线,此现象在灯丝温度升到700K即可觉察,由于工作时的灯丝温度很高,大部分的能量以红外辐射的形式浪费掉了,由于灯丝温度很高,蒸发也很快,所以寿命也大缩短了,大约在1000小时左右
2023-08-15 04:32:294

高分求助:关于VB修改dbf中memo字段的问题

你检查一下,是不是因为modlt里面包含半角的单引号和双引号。如果包含,你要处理一下,否则这里会导致sql不正确。你可以都替换成全角的,看看还有没有错误了。--------------------------------------------------------------------看错了,数据库字段是memo。你先更新完其他字段。你得用rs把数据取出来:rs.Open"select*fromFilenamewheretime=""&Label3.Caption&""",cnn,1,3rs.Fields("llt").AppendChunkmodltrs.Update
2023-08-15 04:32:311

生石灰的干燥原理是什么?

生石灰主要成分为CaO,遇水后会立即发生反应 CaO+H2O=Ca(OH)2 因此常用生石灰做干燥剂来吸收水分
2023-08-15 04:32:311

blazblue 里noel和μ

素体那些都是以SAYA为原型复制的 所有带有一定的感情记忆 和面孔noel是素体之一 也就是素体12 也就是 μ-12素体就是人造人 当初人们想探索境界 但是人的血肉之躯是无法接近的(参考阿拉酷尼所以制造了素体来干这个事素体的制作过程中大部分失败了 noel是不完全成功的个体之一 更多的想知道 到 苍翼默示录贴吧
2023-08-15 04:32:341

生石灰可作食品包装袋内的干燥剂,其干燥的原理是什么(用化学方程式表示)______用过一段时间后,干燥剂

生石灰是氧化钙的俗称,能与水反应生成氢氧化钙,可作食品包装袋内的干燥剂,反应的化学方程式为:CaO+H 2 O═Ca(OH) 2 .生成的氢氧化钙能与空气中的二氧化碳反应生成碳酸钙和水,用过一段时间后,干燥剂中的物质最多有氧化钙、氢氧化钙、碳酸钙三种.有些食品包装袋内的干燥剂是铁粉,铁粉与水、氧气充分接触时容易生锈,生成的铁锈的主要成分是氧化铁,氧化铁呈红色.铁和水、氧气共同作用时生成铁锈,所以与生石灰干燥剂比较,铁粉除了做干燥剂外,还可做吸氧剂,比生石灰更能延长食品保质期.故答案为:CaO+H 2 O═Ca(OH) 2 ;三;红;铁粉除了做干燥剂外,还可做吸氧剂.
2023-08-15 04:32:141

电磁波点亮节能灯原理是什么

节能灯发光原理,是灯中水银气体受电子轰击,发出的紫外线,激发灯壁上的荧光粉,使荧光粉发光。某些波长的电磁波(不是所有电磁波),也能使水银气体发出紫外线,从而灯发光。
2023-08-15 04:32:123

滞回比较器的工作原理

将一个模拟电压信号与一个基准电压相比较。对两个或多个数据项进行比较,以确定它们是否相等,或确定它们之间的大小关系及排列顺序称为比较。 能够实现这种比较功能的电路或装置称为比较器。比较器的两路输入为模拟信号,输出则为二进制信号0或1,当输入电压的差值增大或减小且正负符号不变时,其输出保持恒定。可以将比较器当作一个1位模/数转换器(ADC)。运算放大器在不加负反馈时从原理上讲可以用作比较器,但由于运算放大器的开环增益非常高,它只能处理输入差分电压非常小的信号。而且,一般情况下,运算放大器的延迟时间较长,无法满足实际需求。
2023-08-15 04:32:121

高中英语求职信作文

I like shooting photoes, and prefer to be taken photoes. I have no experience of model, whereas I believe I can study and do it well. Would you please to give me an opportunity.      英文求职信范文 //cetd.sysu.edu.cn/base/dzh/20069272118360.doc  供您选择——  dear sir/madam:  your advertisement for a neork maintenance engineer in the april 10 student daily interested me bacause the position that you described sounds exactly like the kind of job i am seeking.  according to the advertisement ,your position requires top university,bachelor or above in puter science or equivalent field and proficient in windows nt4.0 and linux system. i feel that i am petent to meet the requirements. i will be graduating from graduate school of tsinghua university this year with a m.s. degree . my studies have included courses in puter control and management and i designed a control simulation system developed with microsoft visual interdev and sql server.  during my education, i have grasped the principals of my major and skills of practice. not only have i passed cet-6, but more important i can municate with others freely in english. my ability to write and speak english is out of question.  i would appreciate your time in reviewing my enclosed resume and if there is any additional information you require, please contact me.i would wele an opportunity to meet with you for a personal interview.  with many thanks,  wang lin  英文求职信(二)  april 13,2004  room 212 building 343  tsinghua university,beijing 100084  ms. yang:  i was referred to you by mr. zhang, a partner with your beijing office, who informed me that the shanghai office of your pany is actively seeking to hire quality individuals for your auditor program.  i have more than o years of accounting experience, including interning as an auditor last year with the beijing office of cccc. i will be receiving my mba this may from tsinghua university. i am confident that my bination of practical work experience and solid educational experience has prepared me for making an immediate contribution to your pany. i understand the level of professionali *** and munication required for long-term success in the field. my background and professional approach to business will provide your office with a highly productive auditor upon pletion of your development program.  i will be in the shanghai area the week of april 16. please call me at 136001216901 to arrange a convenient time when we may meet to further discuss my background in relation to your needs. i look forward to meeting you then.  sincerely,  cheng dan  英文求职信(三)  april 13,2004  p.o. box 36  biit university  beijing,china 100000  dear sir/madam:  now and then corporations send out feelers for just the right type of creative person. this person must fit very specific criteria. usually, after all is said and done, the corporation wants a business person who can manage, create and municate. a seasoned professional who"s been around for a while.  if you"ve been looking for this rare bination of business savvy and design expertise, my background might interest you:  ten years of working experience. solid background in the management of creative up-and-ers.  know new technologies that show instant profit, such as cad/cam.  this is but a brief summary of my abilities. and there is much, much more to share.i feel i have strong marketable skills in which you would be interested. please contact me if you would like to hear and see more.  with many thanks,  huang yan  英文求职信(四)  april 13,2004  p.o. box 36  biit university  beijing,china 100000  dear sir/madam:  please consider me for your sales management program. my background is one of selling ideas, concepts and programs, and of motivating myself and others to realize our potential.  attitudes predict behavior - or so goes the saying in sales. if this holds true, i am sure to be as successful in sales management as i am in my college endeavors. my unceasing optimi *** , self-determination and ability to set goals have allowed me to achieve academic and personal objectives.  because of my "can do" attitude, sales will provide the challenge and opportunity to continue my successful history of setting and achieving goals. please allow me the opportunity to elaborate on how my background predicts sales success. i guarantee you"ll be providing your corporation with an outstanding sales management . thank you for your attention.  sincerely,  deng yun  英文求职信(五)  april 13,2004  p.o. box 36  biit university  beijing,china 100000  dear sir/madam:  are you searching for a telemunications manager with expertise in project management and team leadership?  i specialize in creating and implementing high-performance strategies that directly impact growth and profitability of large telemunications panies. in addition to my knowledge of business processes, i also offer proficiency in tele sofare development and cutting-edge technologies.  i am relocating to shenzhen and would be interested in opportunities with your firm. currently, i serve as manager for bit pany"s information industry division. briefly, some of my acplishments include:  developed a tool to track and forecast price,quantity,and revenue, which enables client to monitor business performance  implemented a customized end-to-end testing process and sql database  my business acumen, technical expertise, and leadership capabilities have contributed to a number of successful projects. the enclosed resume outlines my credentials and acplishments in greater detail. i would wele an opportunity to meet with you for a personal interview.  sincerely,  gu bin  dear sir or madame,  i am a college student from yangtzeu university and i will graduate from this university soon.my name is zeng qing,majoring in puter science and technology.i hope to find a job as a programmer in your pany.  while studying in my university,i always work very hard.as a result,i get excellent grades in my studies,winning lots of prizes.with the help of my teachers and my hard work,i have laid solid foundation in my basic knowledge and major.i have mastered c++ programming data structure,principles of database,asseble laguageand sofare project,i have also learned vb and windows programming in my spare time.i know how to install the radio,design the single chip ,manage and design the website system.in my spare time ,i have taken part in various of activities and done some parttime jobs,which increase my work experience.my english is excellent and i have won o national english petition prizes ,i am also good at sports,i play basketball and table tennis quite well.  i think i can do the job well if i can work for your pany,as i always work hard in my work.if you need to know more information about me,please contact me with a phone number of 13669060126.looking forward to hearing from you soon.  yous faithfully,  zeng qing
2023-08-15 04:32:111

怎么查产品的NOEL,NOAEL值

钩子支气管
2023-08-15 04:32:093

为什么生石灰能做干燥剂

生石灰是CaO,可以与水反应,达到吸水干燥的作用 CaO+H2O=Ca(OH)2
2023-08-15 04:32:071

如图所示,△ABC是等边三角形,AQ=PQ,PR⊥AB于R点,PS⊥AC于S点,PR=PS,则四个结论:①点P在∠A的平分

∵△ABC是等边三角形,PR⊥AB,PS⊥AC,且PR=PS,∴P在∠A的平分线上,∴①正确;由①可知,PB=PC,∠B=∠C,PS=PR,∴△BPR≌△CPS,∴AS=AR,②正确;∵AQ=PQ,∴∠PQC=2∠PAC=60°=∠BAC,∴PQ∥AR,③正确;由③得,△PQC是等边三角形,∴△PQS≌△PCS,又由②可知,④△BRP≌△QSP,④也正确∵①②③④都正确,故选A.
2023-08-15 04:32:041

LLF 低延迟 均线

等均线指标能够降低延迟。LLT低延迟趋势线是一种二阶滤波器,阶数相对适宜,相比MA、EMA等均线指标能够降低延迟,同时增强在低频部分的输出信号。
2023-08-15 04:32:031

比较器工作原理

  1、可以将比较器当作一个1位模/数转换器(ADC)。运算放大器在不加负反馈时从原理上讲可以用作比较器,但由于运算放大器的开环增益非常高,它只能处理输入差分电压非常小的信号。而且,一般情况下,运算放大器的延迟时间较长,无法满足实际需求。   比较器经过调节可以提供极小的时间延迟,但其频响特性会受到一定限制。为避免输出振荡,许多比较器还带有内部滞回电路。比较器的阈值是固定的,有的只有一个阈值,有的具有两个阈值。   2、通俗来讲电压比较器的基本功能是能对两个输入电压的大小进行比较,判断出其中哪一个比较大。比较的结果用输出电压的高和低来表示。
2023-08-15 04:31:591