本次惠城区要写的作文要求是什么 其中有什么岭南文化谈..

100ml原液加水至1000ml,则浓度降为原液的0.1倍,又由于配置的消毒液溶质质量分数为0.5%,可求出原液质量分数为5%.将它配制为质量分数Wie0.2%的消毒液相当于稀释25倍,因此需原液16/25L,即640ml.

30/0.56=53.57(本次用电度数)
上月读数为:186-53.57=132.43

假设答错了a道,放弃了b道.
则13a+8b=160-139即13a+8b=21
已知,a,b只能是正整数,所以,a=1,b=1
答错了1道,放弃了1道.

This report evaluation results only response assessment object in this evaluation objective, value definition, assessment of assumptions and constraints, according to the economic principle for determining the open market value. * * assessment company considers the following matters ( including but not limited to ) may influence the assessment conclusion, but in the present case Jun of assessment to estimate its influence to the evaluation results, I have the honour to the users of the report and reading notes:
( 1 ) the report calls " value " is based on the assessment of the assets currently uses the same, in continuous operation and evaluate fiducial day by the performance of the specific environment under the premise, according to open market principle to determine rent value current fair market price, including the purchase price, freight, insurance premium, installation costs, the Committee estimated the equipment imported equipment has the lifting of customs supervision and in accordance with the VAT input tax deductible policies, to assess the price does not include vat. The market value is to satisfy the public markets and asset effective use of hypothesis premise, relative to the overall market reasonable or fair value;
( 2) the evaluation conclusion is asset evaluation Company Limited issued, by the specific to the project evaluation personnel practising ability level and effect. Assets evaluation report the use of all parties should pay attention to this report revealed by special events and assessment report of the legal validity of content;
( 3) the assessment result is reflected in the evaluation objective evaluation object, according to the open market principle to identify the current price, without considering the future may assume a mortgage, security matters, as well as the special transaction may be an additional cost to assess the value of effect, it does not consider the exchange rate, national macroeconomic policy changes and in case of natural force and other force majeure impact on asset prices. The condition and evaluation of follow the continued use of the principle of change, the evaluation results will generally failure;
( 4) commissioned by side, being evaluated unit management and its relevant personnel to provide and assess behavioral correlates of documents, business license, property documents and all other materials, preparation of the report are based, the authenticity of the information provided, legal responsibility;
( 5) on the existence of the business may influence the assessed value of the assets of flaws in enterprise delegate matters, no special explanation and evaluation staff has to perform the evaluation of the program is still not informed of the situation, assessment mechanism and assessment of personnel do not bear the relevant responsibility;

解题思路：根据题意在两种方案下，设清洗前蔬菜上残留的农药量为1，分别用a的代数式表示蔬菜上残留的农药量，用a单位量的水清洗一次，蔬菜上残留的农药量为P；把a单位量的水平均分成两份后清洗两次，蔬菜上残留的农药量Q，比较P与Q大小即可得到结果．

设清洗前蔬菜上残留的农药量为1，分别用a的代数式表示蔬菜上残留的农药量，用a单位量的水清洗一次，蔬菜上残留的农药量为P=[1/1+a]；
把a单位量的水平均分成两份后清洗两次，蔬菜上残留的农药量Q=[1
1+
a/2]•[1
1+
a/2]=
1
(1+
a
2)2，
∵（1+a）-（1+[a/2]）²=1+a-1-a-
a2
4=-
a2
4，
∴1+a＜（1+a）²，
∴P＞Q，
则清洗两次残留的农药量比较少．

点评：
本题考点： 分式的混合运算．

考点点评： 此题考查了分式混合运算的应用，以及作差法比较大小，表示出P与Q是解本题的关键．

1、不变,因为他这场投中三分球的概率仍然是2个（就这么回答即可,
2、把篮球换成小球,把篮球运动员换成自己或小明,其他照搬

The fashion for the youth of the demand for the development process, and the traditional theory of teaching different from the classroom to mobilize more active and interesting, applied to interact in Authorware, button response, special effects design, mobile, more Effective in promoting the efficiency of the classroom.

C,老师讲过

竞赛得分=10×答对的题数+（－5）×未答对的题数,根据本次竞赛得分要超过100分,列出不等式求解即可．
设要答对x道．
10x+（－5）×（20－x）≥100,
解得x≥．
故答案为：14．

解题思路：（1）曝光时间极短，可以认为运动痕迹的长度除以曝光时间的平均速度就为此时的瞬时速度．
（2）再根据自由落体的速度位移关系公式求解石子开始下落处离开始曝光时所在位置的高度．

由题意可得：x=1.6×[100/4]×10^-2m=0.4m
v=[x/t]=[0.4/0.02]m/s=20m/s
由速度位移关系公式，得到：v²=2gh
得：h=20m
答：石子开始下落处离开始曝光时所在位置的高度为20m．

点评：
本题考点： A:匀变速直线运动规律的综合运用 B:匀变速直线运动的速度与位移的关系

考点点评： 本题关键能明确极短时间内的平均速度可以表示瞬时速度，然后根据运动学公式列式求解，不难．

1 再一次“迎奥运知识竞赛”中,规定答对一道题得20分,答错一道题或不答扣10分.本次竞赛共10道题,在这次竞赛中,小强被评为优秀（140分或140分以上）,则小强至少答对多少道题?（用不等式解）
设他至少答对的是x
20x-(10-x)*10>=140
x>=8
答：他至少答对的是8道题.
2 甲乙两人相距42km.两人相向而行,甲比乙早1.5h出发,结果乙出发4h后两人相遇,若他们同向而行,乙比甲早8h出发,结果乙再走5h后仅超过甲3km.求甲乙两人的速度.（用二元一次方程解）
设甲的速度是X,乙的速度是Y
1.5x+4(x+y)=42
(8+5)y=5x+42+3
解得：y=5,x=4
答：甲速度是4千米/时,乙是5千米/时

I deeply hope to be the ambassador in this activity.

已知：v1=6km/s v2=3.5km/s Δt=200s
求：s
s/v2-s/v1=Δt s/3500-s/6000=200 s=1.68*10^6m

解题思路：绝对值小于1的正数也可以利用科学记数法表示，一般形式为a×10^-n，与较大数的科学记数法不同的是其所使用的是负指数幂，指数由原数左边起第一个不为零的数字前面的0的个数所决定．

0.000 0014=1.4×10^-6；
故答案为：1.4×10^-6．

点评：
本题考点： 科学记数法—表示较小的数．

考点点评： 本题考查用科学记数法表示较小的数，一般形式为a×10-n，其中1≤|a|＜10，n为由原数左边起第一个不为零的数字前面的0的个数所决定．

黑板报，猜谜语，猜歌

D

Please help me book a room from ..to..The..room will be prefered.All the expenses of this order is paid by..

25毫米=0.025米,1200平方千米=1200×10^6平方米
1200×10^6×0.025×（1-20%）=2.4×10^7（立方米）=2.4×10^3（万立方米）
即2400万立方米

花儿随风舞蹈.

我在网上看过这个问题,具体好像是2012 12 21日 太阳下后 黎明永不会在出现 ,其实好像是宇宙进入啥光带子 现在人类生活在3惟空间,似乎要进化到4维空间.那时候人就可以飞了 没有万物引力什么的 ,好像会死一些人 ,地球黑3天.3天似乎有什么灾难.熬过的人才能得道升华

Ladies and gentlemen,
Friendship will be deepened by communication and wisdom be raised by collision. We sincerely hope that all representitives from different countries could communicate with each other extensively and discuss thoroughly around the theme of this conference, generating more good ideas that benefit the successive development of the world's printing and to promote stable growth and achieve mutual winning in cooperation reinforce. This november, we will hold the "All in Print China 2011" in Shanghai, China. We welcome every friend to take an active part in it and expect meeting you in Shanghai.
May the WPCF be a success beforehand and everyone here happy, healthy and cheerful.
Thank you!

句末加“的市”或者最后一句改为“参赛节目最多”
这句话缩句就是“我市成为参赛最多的节目”,“我市成为节目”,这句话是不通的,所以改为“我市成为参赛最多节目的市”或者是“我市才赛节目最多”.
希望有帮到你,不懂可追问.

做任务中,求采纳,谢谢^@^

Being this exhibition would of sponsor a square,we provide an invitation form,please keep in mind an enclosure.Please fill in an information and reply to me.

我觉得是第二种：设农药总量B,残留b
b1/B=1/(a+1) 所以残留农药为b1=B/(a+1)
b2/B=1/(0.5a+1) b3/b2=1/(0.5a+1)所以残留农药为b3=B/[(0.5a+1)*(0.5a+1)]=B/a+1+0.25a^2
b3

由频率分布直方图可知，组距为10，[50，60）的频率为0.008×10=0.08，
由茎叶图可知[50，60）的人数为2，设参加本次考试的总人数为N，则
2
N＝0.08，所以N=25，
又由茎叶图可知成绩在[50，80）的人数是19，所以成绩在[80，100]的人数为6．
所以本次考试中优秀者的人数为6．
故选B．

先假设都作对,得分为20*10=200
每错一道减去10+5=15分,
因此（200-80）/15=8
答对12道,错8道

The aim of this visit to USA is to attend the World Medicine Meeting,which will be held in New York on Oct 2nd-9th and the time is getting short.We are very anxious and hope we can get the visa as soon as possible.
Thanks a lot.

第八届“全国十佳少先队员”事迹简介全面发展、多才多艺、在少先队活动中尽职尽责的重庆市人民小学少先队员王文斌.男,12岁,汉族,他爱好广泛,全面发展,曾获第五届宋庆龄奖学金,全国推新人大赛少年朗诵组优秀奖,并参加《红岩魂》话剧表演,成功扮演“小萝卜头”的角色,集体荣获文化部“五个一工程奖”.在承担繁重演出任务的同时,他刻苦学习,成绩一直名列前茅.他还担任学校少先队大队长,积极参与组织了“手拉手”、“抗击非典”等一系列少先队活动. 品学兼优、积极争章、积极维护民族团结的新疆自治区博乐市第一小学少先队员古孜努尔.女,12岁,维吾尔族,她品学兼优、多才多艺,成绩一直名列前茅,体育、舞蹈方面尤为突出,连续5年被评为校“三好学生”、“优秀少先队员”.她非常注意维护民族团结,不仅在班级中积极与各民族同学进行交流,而且还组织本中队与维族中学的中队开展“手拉手”联谊活动.她积极参与少先队活动,在“雏鹰争章”活动中,争得了“艺术章”、“孝敬章”等数枚奖章,是学校的“争章明星”. 勤劳朴实、乐于助人、见义善为的内蒙古自治区呼和浩特市铁路第一小学少先队员乐雅芳.女,13岁,汉族,她学习刻苦,诚实上进,团结同学,勤俭节约,是老师同学公认的好学生.2002年12月14日下午,乐雅芳和亲昵的伙伴王超、吴亚斌在呼和浩特青城公园玩耍时,发现有人掉进了冰湖,她们三人见义勇为,奏响了呼和浩特“12.14”英雄群体勇救落水儿童这曲时代赞歌的第一个音符.教育部、内蒙古党委宣传部、内蒙古少工委授予她“见义勇为模范学生”和“见义勇为好少年”等荣誉称号. 善于思考、勇于创新、富有爱心的河北省石家庄市桥西区东里小学少先队员刘晓梦.女,13岁,汉族,河北省“十佳少先队员”.她爱学习、善思考,在科技创新方面表现突出,现已完成15项发明,其中9项获国家专利,曾获第五届全国宋庆龄奖学金、中国少年儿童海尔科技创新奖,被评为第三届“中国少年科学院小院士”、河北省发明创造优秀少年、石家庄市十佳金童.她作为学校的大队长,积极组织各项少先队活动,并主动将自己参加竞赛所得的数千元奖金捐给贫困地区的学校设立“创新工具库”. 全面发展、乐于奉献、在队组织建设中发挥积极作用的上海市民办交大飞达中学少先队员刘凌英枝.女,13岁,汉族,她是学校大队副主席,上海市红领巾理事会理事、活动部部长,热心为集体尽职,热心为伙伴服务,积极参与和组织“手拉手”等少先队活动,在“上海市青少年教育活动基地”的建设过程中,经她的倡导和带动,上海市8400个小队自愿认种小树,建设成“红绿领巾世纪园”. 热爱生活、勤于实践、全面发展的山东省济南市燕山学校少先队员李小楠.男,13岁,汉族,山东省十佳少年,济南市三好学生.他热爱生活,钟意摄影,曾获全国少儿摄影大赛小学组一等奖,全国青少年摄影比赛小学组金牌,并在济南市成功主办过个人摄影展,还获邀当选为第45届世界新闻摄影大赛国际儿童评委会主席,被《人民摄影》报评为2001年“中国摄影界焦点人物”.他学习成绩优异,英语、写作由为突出,曾获济南市少儿英语会话比赛中十佳奖,全国青少年征文二等奖等. 身残志坚、超越自我、勇创佳绩的广东省深圳市罗湖小学少先队员杨绿野.女,13岁,汉族,深圳市“优秀少先队员”.她是一位先天患双耳深度耳聋的残疾同学,但她凭着坚强的毅力,不仅学会说一口流畅的普通话,而且多才多艺,全面发展,年年被评为校三好学生、优秀少先队员.她还多次在报刊上发表文章,并获得第四届“语文报杯”全国中小学生创新作文大赛全国二等奖,1997年全国少儿书画大奖赛银奖,2000年二十六省市少儿美术书法摄影大赛特等奖. 热爱集体、勤于实践、积极争章的青海省西宁市南山路小学少先队员张哲.男,11岁,蒙古族,青海省“雏鹰少年”.他聪颖好学,成绩优异,在写作、绘画等方面表现突出.他身为学校少先队大队长,乐于助人,积极带头开展各项少先队活动,在“手拉手”、“雏鹰争章”、“雏鹰假日小队”、“新世纪我能行”体验教育活动中有出色的表现,其间共获得雏鹰奖章68枚. 素质全面、尽职尽责、热心“手拉手”活动的辽宁省沈阳市铁西区勋望小学少先队员黄涛.男,汉族,11岁,沈阳市“十佳少先队员”.他是学校少先队大队长,带领同学热心开展“手拉手”活动,主动与家庭贫困的同学、智障儿童接成“手拉手”小伙伴,长期帮

(1)一次清洗留农药量之比为1/a+1
(2)分两次清洗.第一次清洗后留农药量之比为1/(a/2+1)
.第二次清洗后留农药量之比为1/(a/2+1)/(a/2+1)=4/(a+2)^2

22.5÷0.52+2320=2365千瓦时

Why Bat Has No Friends
Many years ago there was a great war between the birds and the animals.
No-one knows why. It just happened.
The creatures with wings flew to the battle site and made their camp. Those who had legs, walked there.
Bat joined the birds. "Hey, I've got wings. So I must be a bird. And there are more of us, so we should win!"
The first battle was long and hard, but gradually slashing claws and tearing teeth began to win over beaks and wings.
Bat could see that the birds were losing so he hid behind a bush.
When the battle was over the animals walked back towards their camp.
"Man, did we kick those birds' butts or what?" said Buffalo, spitting out a few feathers.
"Yeah! We kicked their butts" cried Bat in his high pitched voice
The animals stopped. "What are you doing with us?" shouted Beaver, slapping the ground hard with his big, flat tail. "You've got wings. You're with the other side." "Yeah, that's right" growled Bear. "And I'm going to eat you!"
"Guys! Guys! Get Real!" said Bat, pointing into his mouth. "When have you ever seen a bird with teeth? Of course I'm one of you!"
"I suppose so," grumbled Bear.
The next day there was to be another battle and Bat walked to the site with the animals. "Let's rip their beaks off!" he yelled.
This time the birds flew as an army with the sun behind them, its bright light blinding the animals. Tearing talons and flapping wings tore into furry bodies. The birds were winning. Again Bat hid behind a bush.
When it was all over and the birds started to fly back to their camp, Bat silently joined them.
"That was a good victory today", said Eagle. "Yeah! We kicked their butts" shouted Bat. "Hold on" said Crow. "You were with the other side."
"Guys! Guys! Get Real" said Bat. "When have you ever seen an animal with wings like mine? Of course I'm one of you." He flapped his wings vigorously.
"I suppose so", said Eagle.And that's how it was in each battle.
When Bat saw that the side he was on was going to lose, he pretended he was on the other side.
Eventually the birds and animals got tired of fighting each other. They all came together while their Chiefs held a council of truce to decide how things would be settled.
It was very difficult for Bat to pretend that he belonged to both sides. The Chiefs knew what he had done.
"Friends should always help each other and not pretend to be one thing when they are another" they said.
"Bat has wings, but he is not a bird. He has teeth, but he is not an animal. From now on, Bat will only fly at night when other birds are asleep and the animals are hunting."
All the creatures nodded in agreement.
"You will always be alone, Bat. You will never have a friend among the creatures that fly or from those that walk!"
And that's why Bat always flies at night and doesn't have any friends.

(1)野外,因为可以让学生感受自然的美好.
(2)美丽秋游 回归自然.
(3)书写形式 用相机记录.
亲~ 请采纳为最佳答案哦~ ^_^ ~

解题思路：（1）液体温度计所测温度应高于温度计内液体的凝固点，低于液体的沸点．
（2）物质从气态变成液态称为液化，水蒸气遇冷的物体时会发生液化现象．
（3）沸腾时温度保持不变，此时的温度就是沸点．

（1）在标准大气压下，沸水的温度是100℃，酒精的沸点是78℃，水银的沸点是357℃，水银的沸点高于沸水的温度，所以测沸水的温度要选水银温度计．
（2）将热水倒入烧杯中，水蒸气遇到冷的温度计管壁时会发生液化现象，在管壁上出现了一层小水珠，所以很难看清示数．
（3）当温度到达98℃时就不再升高了，所以温度不变时即为沸点，此时吸热温度不变；
故答案为：
（1）水银；（2）水蒸气遇到冷的温度计管壁时会发生液化现象，在管壁上出现了一层小水珠；（3）98．

点评：
本题考点： 探究水的沸腾实验．

考点点评： 此题考查温度计原理以及不同物质沸点的比较．主要考查学生应用物理知识解决实际问题的能力，同时考查了液化的概念．这些都是该实验中应该重点掌握的内容．体现物理来源于生活，服务于社会的新课程理念．

大家好：
四季是美丽的,所谓的“沾衣欲湿杏花雨,吹面不寒杨柳风”草长莺飞 伴着和煦的风,是春天
夏天像一束火把,田里的稻谷像金子般成熟了意味着秋季的大门将敞开,风霜雨雪风雪载途冬之色.春夏秋冬都各有各的诱惑力,吸引力,它们 周而复始,请大家畅所欲言吧!,

A、小王参加本次数学考试，成绩是150分是随机事件，故本选项错误；
B、某射击运动员射靶一次，正中靶心是随机事件，故本选项错误；
C、打开电视机，CCTV第一套节目正在播放新闻是随机事件，故本选项错误．
D、口袋中装有2个红球和1个白球，从中摸出2个球，其中必有红球是必然事件，故本选项正确；
故选D．

辛苦翻译的啊,累死了~基本符合我们水平~
Good morning,every tourist friend.At first I represent our China travel agency to welcome your tourism to wuxi .I am your l guide for this travelling ,im zhu xx,everybody can call me xiao zhu.This is our driver mr King by my right side ,he has been a driver more than ten years,so everyone can release your concern about the safty.We gather in this small compartment by fate ,today I will try my best to provide you the perfect service.our two-day schedules are following.we go to visit the YuanTouZhu this morning,and in the afternoon,we can go to the lingshan Buddha.Tomorrow we'll go to XiHui park.This time we will check in the wuxi grand hotel,which is a four-star hotel.Here,I wish you have a pleasant trip.

解题思路：根据元素周期表中的一个小格所提供的信息是原子序数．元素符号．元素名称．相对原子质量，解答本题．

A、加碘食盐中的碘的含量很低，家中应储备很多食盐无实际意义；
B、由图示可知碘的原子序数是53，所以其质子数也是53；
C、碘-131是碘元素的一种，所以其质子数也是53；
D、相对原子质量的单位是“1”不能是克，所以由图示可知碘元素的相对原子质量是126.9；
故选B

点评：
本题考点： 元素周期表的特点及其应用．

考点点评： 该题是对元素周期表意义的考查，是对元素周期表中的一个小格信息灵活应用能力的训练，属于基础性知识考查题．

1.(1)(5x+22+15+12+19)/9
(2)把x=14代入(5x+22+15+12+19)/9中得
(5x+22+15+12+19)/9
=(70+22+15+12+19)/9
=138/9
y=138/9
...

now,let's begin.At first i'd like to say that i hope this conference will be constructive and have positive affects.
the main purpose of this meeting is to solve some finance and H&R problems caused by recent innovation.
since it seems that we cannot reach to an agreement,can we switch to the next one?
i am afraid i cann't quite agree with you.could you please make a change?
我学过商务英语 希望我的翻译对你有用

Dear editor,
I’m writing to tell you about the discussion we recently had about whether our parents should accompany us studying at school.
We do have different opinions on this matter. Most of us (about 70%)think our parents should not accompany us studying at school since it make us fall into the habit of dependence, so that we won’t form the good habit of studying. What’s more, it is harmful for us to form the habit of controlling ourselves. At the same time it affects our parents’ work, studies and rest.
While about 30%of my classmates think it necessary for our parents to accompany us studying at school. Accompanying us studying at school can let us have more time to spare for our studies. Besides, we shall be more healthy for their cooking. On the other hand our parents can help us set up our aim, urge us to finish our task, encourage us to overcome difficulties and get us into the good habit of studying..
Yours truly,
Li Hua

这是一篇应用文写作，写一封信，介绍同学们关于父母有没有必要陪读这个话题的讨论情况。本题给出的材料比较全面，我们所要做的首先是应用正确的英语句子把这些内容表达出来，在此基础上亦可适当发挥，注意不要遗漏材料中给出的要点。写作前先结合要表达的事情确定句子的人称时态，注意标点符号及大小写等问题，不要犯语法错误。注意上下文之间的逻辑关系，语意连贯。注意写作中的时态、人称和数的问题，时态一般是一般现在时态，人称是第一人称较多。写作中语言要准确、简明，说明有条理，符合逻辑。

你好.译文如下：

Dear sir or madam,

Due to the low yield of the production of this model, we were 200 behind order. Please kindly inform us the status of this order. If it's not urgent, is it possible that we send the remaining products with the next order?
On the other hand, in the warehouse we have 130 finished-products of this model, which was produced with IY parts. The model we are producing now used IY1 parts. Please also confirm with your clients whether IY model can be used.
Looking forward to your reply.
Thank you.

Yours sincerely,
XXX

B

A.歧义句，“五个学校的老师”中的定语可为“五个”或“五个学校”。C.本句中主语为“全校师生”，而谓语残缺。 D.“提高”是一面性的，“是否”是两面性的，二者搭配不当。

首先,我表示汗~~~~~~
本着认真对待的原则,我来解答.
主要是没有打标点符号的问题.这样读出来就有两种意思.
1.本次乒乓球比赛,四年级一班打败了四年级二班,夺得了冠军.（表示一班获胜）
2.本次乒乓球比赛,四年级一班打败了,四年级二班夺得了冠军.（表示二班获胜）
两个班都希望自己赢得比赛,所以都会以自己获胜的语气来理解这句话!

解题思路：设有x人参加聚会，每个人需要和另外的（x-1）个人握手，所以共握手

x(x−1)

2

次，根据共握手次数=10为等量关系列出方程求出符合题意的解即可．

设有x人参加聚会，由题意可得：

x(x−1)
2=10，
整理，得x²-x-20=0，
解得x₁=5，x₂=-4（不合题意舍去）．
答：共有5人参加聚会．
故答案为：5．

点评：
本题考点： 一元二次方程的应用．

考点点评： 本题主要考查一元二次方程的应用，关键在于理解清楚题意，由共握手次数找出等量关系列出方程求解．

Good evening,dear passengers,welcome aboard!This train departs from 起始站 and is bound for 到达站.The train will arrive at the station of xx at (到达时间).

（Ⅰ） c=1-（0.05+0.20+0.30+0.10）=0.35，
a=
5
0.05 =100．b=100×0.20=20，
由频率分布表可得成绩不低予70（分）的概率为：p=0.35+0.30+0.10=0.75…（4分）
（Ⅱ）由频率分布表可知，“成绩低予70（分）”的概率为0.25，
∴按成绩分层抽样抽取20人时．
“成绩低于70（0分）”的应抽取5人…（6分）ξ的取值为0，1，2，
p(ξ=0)=

c 215

c 220 =
21
38 p(ξ=1)=

c 15
c 115

c 220 =
15
38 p(ξ=1)=

c 25

c 220 =
1
19 ，
∴ξ的分布列为

ξ 0 1 2
p
21
38
15
38
1
19 …（9分）
∴ Eξ=0×
21
38 +1×
15
38 +2×
1
19 =
1
2 …（12分）

设费用为x元,则有：
x=（1086-1042）×2.5
x=44×2.5
x=110
所以起飞为110元
很高兴为您解答,skyhunter002为您答疑解惑
如果本题有什么不明白可以追问,