4月20日甲乙两个工程队同时从两侧开挖一个山洞甲队每天挖23米乙队每天挖25米山洞长480米5月1日能做么用方

Announcement
Teachers,The spoken english competition which was originally planned on 20th,April has been postponed to 15th,May beacuse some experts are about to our school to give a speech. Please inform the players in your class of this information and write back as soon as possible.

C

设：这个学校人均捐款x元,则
(10x +20 )÷50-（12x-30）÷54=0.5
解出来就是可以了

April 20,Tuesday.The weather was fine.You finish work at home,decided to cinemas to see films.Going to the cinema,you suddenly discovered that a foreigner,from the street very anxious.Therefore,ask you to embark on what happened.They can understand each other heard the words.Finally,you rely on sign language to know each other's meaning.The foreigners want to go to the original People's Park.So you called the cabs,and told the driver he wanted to go.Then you go to the cinema.

解题思路：根据质量守恒定律可以判断物质的元素组成，根据物质的化学式、化学方程式可以判断物质的种类、反应类型，在化合物中，元素化合价代数和为零．

A、根据质量守恒定律可知，反应前后原子的个数不变，每个X中应该含有一个氢原子和一个氯原子，是HCl，正确．
B、置换反应是指由一种单质和一种化合物反应，生成另外一种单质和一种化合物的反应，该反应的生成物是两种化合物，不属于置换反应，错误．
C、水是由氢元素和氧元素组成的化合物，属于氧化物，正确．
D、HClO中，氢元素的化合价是+1，氧元素的化合价是-2，根据化合物中元素化合价代数和为零可以求出氯元素的化合价是+1，正确．
故选：B．

点评：
本题考点： 质量守恒定律及其应用；从组成上识别氧化物；有关元素化合价的计算；置换反应及其应用．

考点点评： 本题主要考查概念方面的知识，只要熟记教材知识就可顺利解答．

设：这个学校人均捐款x元,则
(10x +20 )÷50-（12x-30）÷54=0.5
x=20.5(元)
答：

祈福雅安,雅安加油!一方有难八方支援!
爱心汇聚力量,团结战胜灾害!
绵薄之力积沙成塔,携手同心抗震救灾 !

I don't know exactly when my letter will reach you, but still I wish you a very happy birthday on the twentieth of April.

32
32+8×100%，
=0.8×100%，
=80%；
答：及格率是80%．
故答案为：80%．

April 2-20 (美式）
2-20 April (英式）
Between April 2nd and 20th ( 英文 )
From April 2nd to April 20th （ 英文 )

The:on April 20th,American petroleum drilling platform fire cause seven people injured 11 deaths.
Oil RIGS:about two days,damaged explosion sunk Wells began to leak.
Worse:every 5,000 barrels of oil drilling platform,five times previously estimated quantity.
Coping:underwater robot start stop leakage,U.S.department "burning oil".
Update:the United States announced that the oil crisis as national disaster relief troops.
Oil process:on April 20 "deep-water drilling platform explosions." the horizon 11 deaths caused by staff at about 36 hours,sank the gulf of Mexico.On April 24th pipe began to leak.
The leakage of oil companies,loss of billions of dollars.American beauty.500 million fishermen claim,Marine environment immeasurable losses.
The gulf oil event began did not get enough attention.Until April 28,new oil Wells are discovered,points from the previous estimates,leakage quantity of 1000 barrel rise to 5,000 barrels,people realized to the disaster.Experts say the most serious is the oil leakage,high water-soluble ingredients and the gulf of Mexico,burning and integrated water cleaning,processing oil or takes five years,which caused the disaster and influence to eliminate within short time also.
On May 2,2008,the President of the United States senator Obama to the gulf oil leakage inspection.He warned that the leakage accident "may lead to an unprecedented environmental disaster relief work,can last a long time.Obama said,accident responsibility,oil drilling platform of rent British petroleum company,the "blame for relief spending bill".

A

Dear schoolmates,
On April 20, An earthquake hit Yaan Sichuan. It brought a great loss to the people there.
The earthquake brought a great loss. It destroyed the villages and towns, so people lost their farmlands and homes. hundreds of people even lost their homes. They had nowhere to live and no food to eat. When people heard the news, they showed their love in different ways. They were in a great hurry to provide food and clothes to the people in disaster areas. Some even gave money to them. As students, I think we should try our best to help the people in need. Let’s save our pocket money and send it to them.
If everyone gives a hand , our world will become much more beautiful .
School committee

Happy 17th birthday on April 20th.

To:The White Rose Hotel
From:Nancy Smiths
Dear Sir/Woman:
I am so sorry to inform you that I have to cancel the booking of the two two-persons room.Due to the bad weather,our travelling routes have been changed.As a result,I can't arrive on time.I beg your forgiveness sincerely!

A 试题分析：此类词语使用判断的题目，要在整体把握句意的情况下，根据语境，结合着词语的解释来判断。天崩地裂，象天塌下、地裂开那样，比喻重大的事变。千钧一发，比喻极其危险或比喻情况万分危急,用...

32
32+8 ×100% ，
=0.8×100%，
=80%；
答：及格率是80%．
故答案为：80%．

April 2-20 (美式）
2-20 April (英式）
Between April 2nd and 20th ( 英文 )
From April 2nd to April 20th （ 英文 )

解题思路：已知大黄鸭的质量可求的其重力，根据漂浮条件求出F浮=G，再利用阿基米德原理的推导公式求排开水的体积．

大黄鸭的重力G=mg=600kg×10N/kg=6000N，
∵大黄鸭浮在海面上，
∴大黄鸭受到的浮力F_浮=G=6000N，
∵F_浮=ρ_海水gV_排，
∴浸在水中的体积V_排=
F浮
ρ海水g=
6000N
1.0×103kg/m3×10N/kg=0.6m³．
故答案为：6×10³；0.6．

点评：
本题考点： 阿基米德原理．

考点点评： 本题考查了学生对物体浮沉条件、阿基米德原理公式及推导公式的掌握和运用，综合性强，有难度．

可以进行索赔
其中因为第3项事件可以向甲方索赔2天；
不过第4项事件表述不明确，“5月23日用30个工日修复冲坏的永久道路，5月24日恢复正常挖掘工作，最终基坑于5月30日挖坑完毕。 ”谁用30个工作日修复道路，确定是否在5月24日恢复工作呢？

雅安5.9级地震.八点多 的时候.

April,20th Tuesday Clear
After finished the homework,I decided to go for a movie.On the way to the movie theater,I saw a foreigner standing by the street looking very frustrated.So I walked toward him and asked what happened.But because of we both unable to understand each other's language,so instead,we used the sign and body language.As a result,he had been wanting to go to the People's Park but didn't know how to get there.I helped him called for a taxi and instructed the driver to the People's park.After that,I went to the theater.

如果你们愿意接这单生意（按较低价），那么就承认B商的说法即可，当然这样就没有纠纷了。如果你们不同意B商的说法，就要据理力争，因为当初是向国外A商发盘，并未同意他转至B商，除非当时发盘中另有规定，否则B商不是合法的受盘人，你方也当然不受发盘的约束。提问中“我遂将信用证撤回”表述似有误，应为我方遂将原发盘撤销，信用证不是你们开立的，何来撤回一说？所以现在的做法就是向B商发出电传或E－MAIL，陈清我方坚决的态度，强调根本没有合同存在！一定要注意保存相关证据，比如如果是传真，你们的传真机应该打出一个RECEIPT（4月20日就应该有的），加上当时传真的原件，就构成一个完整的证据。这些细节一定要注意，所谓防人之心不可无，未雨绸缪，有备无患。

解题思路：根据工作效率和×合作用的时间=工作量，设x天完成，4月20日开工，5月1日前完工一共是11天，求出所用的时间与11天进行比较即可．

设x天完成，
（23+25）x=480，
48x=480，
48x÷48=480÷48，
x=10，
4月20日开工到5月1日前一共是11天，
10天＜11天，
答：5月1日前能完成这项工程．

点评：
本题考点： 简单的工程问题．

考点点评： 此题解答关键是找出题中的等量关系，设出未知数，列方程解决问题．

50%
9:7
20

it is already two month since we agreed on the Project payment for goods on April 20th in
Shanghai. Would you please be so kind to give me the payment date?
手翻,供参考.

银行英语词汇通
作者:王红雨 日期：2009-06-01
出版：机械工业出版社 精装：平装
开本：32 版次：1
页数：362 ISBN：711126937
原价：.00
本书以简明易懂的语言介绍了美国商业银行的运作、美国金融产品和服务的特点及要求,并将银行业务中常见的法律问题、监管问题、商业惯例、商业术语融汇于专业词汇的解释中.第一章是学习背景,介绍了美国商业银行当前...

需要480÷(23+25)=10天
即20+10=30号完工
所以可以的

2 o'clock on sunday,20th April

The payment for invoice with the No.0122017&0122019 is being processed and expected to be received on Apr 20,while No.0122017&0122019 will be payed on Apr.22.

是4月20

一楼使用的是标准的google翻译.最好这样写：
Nel 20 aprile, 25 aprile, 28 aprile e il 5 maggio, mi ha detto che hai già pagato, ma non hai pagato in realtà. Abbiamo fatto un'accordo, e tu hai detto che sei una persona onesto. Speriamo che possiamo rispettare l'accordo.
L'oggetto è arrivato a Roma a mese scorso, finora non vai a pagarlo. Se non vuoi pagare il conto, c'è la possibilità che l'oggetto potrà ritornare in Cina e io devo pagare le spese di spedizione.Magari non abbiamo bisogno di farlo.
Facciamo così, un nuovo accordo: mi paghi 1 euro adesso, ti manderò l'oggetto, e mi paghi il resto del conto entro 30 giorni da quandao hai ricevuto l'oggetto! Va bene?

解题思路：联合国六种工作语言包括了联合国创始国的语言：汉语、英语、法语、俄语，后来还加上了使用很广泛的语言：阿拉伯语、西班牙语．

汉语是世界上使用人数最多的语言，英语是世界上使用范围最广的语言，汉语是联合国的六种工作语言之一．
故选：D．

点评：
本题考点： 世界主要语言及其分布地区．

考点点评： 主要考查汉语是世界上使用人数最多的语言，属于基础题．

长风破浪会有时，直挂云帆济沧海。人有悲欢离合，月有阴晴圆缺。求采纳

1.在4月份的工作中,到4月20日完成了全月计划,照这样计算,到4月30日将超额完成了（50 ）%（1/20）*（30-20）＝50％
2.半径:37.68÷2÷3.14÷2＝3(CM)
体积:3.14×3的平方×2
=56.52立方厘米
减少了( 56.52)立方厘米

My dear fellow students,
Today I want to talk about good manners and courtesy. Some students helped the old cross the road, others helped cleaners clean the streets on April 20th. I agree on the...

学校的人均捐款数为20.5元

设全校捐款为x元
10x+20=12x-30+0.5
x=19.75元