以susan的名义给约翰先生写一份祝贺信,祝贺他荣升为abc公司的总裁

运用了设问,排比和比喻

先分清两个概念
实际接触面积 名义接触面积
所谓 实际接触面积 是对摩擦力有贡献的接触面积
名义接触面积 包括实际接触面积 再加上对摩擦力没有贡献的那部分接触面积
这里有个疑问 何谓对对摩擦力有贡献 ? 对摩擦力没有贡献的接触是什么?
打个比方 现在有个回字形的面 外环比内环高1毫米 在这个面上放个平面重物 在重物的压力下 外环被压低1毫米 整个重物面和整个回字面接触 但是 压力全部落在外环上 内环只是在接触的临界状态 没有压力 对摩擦力没有贡献
现在看那两个结论 实际接触面积与载荷呈线性关系的意思就是
还是看上面的例子 现在我们增加重力 由于某种原因 增加的力只集中在 回字形内环上 (比如重物也是回字形的 并且内外环能上下错位的,增加的重量正好在内环上) ,结果 下面的回字形 内环被压低1毫米 在这种情形 和 上面的情形中 摩擦系数是一样的
当实际接触面积接近名义接触面积时
还是那个例子 就是说 内环大小趋向于0 我们就去极限 只有外环
这时增加重力 全部落在外环上 就是说 没有多余的内环为外环分担压力 结果就是 外环(即整个接触面)被压得更低 从而改变了接触面的物理性质 因为压得更紧 表面的 突起空隙 被相对填满 就是变得更光滑 事实上这种事在生活中例子就不少 用肉眼就看的见 比如 用刀压姜

圆整就是往上进个厚度,比如7.4mm,就圆整到8mm.还要看是否有那个厚度的钢板,比如说我厚度圆整到7mm,但是,没有7mm这个厚度的板,所以要圆整到8mm.

(1)
sinx+cosx=1/5
∴(sinx+cosx)^2=1+2sinxcosx=1/25
∴2sinxcosx=-24/25
∴(sinx-cosx)²=1-2sinxcosx=49/25
∵x∈(-π/2,0)
∴sinx-cosx＜0
∴sinx-cosx=-7/5
(2)
tan(π/4+α)=(1+tanα)/(1-tanα)=1/2
∴1+tanα=1/2*(1-tanα)
∴3/2tanα=-1/2
∴tanα=-1/3
(sin2α-cos^2α)/(1+cos2α)
=(sin2α-cos^2α)/(1+2cos^2α-1)
=(sin2α-cos^2α)/2cos^2α
=2sinαcosα/2cos^2α-1
=tanα-1/2
=-1/3-1/2
=-5/6
补充:tan16+tan29+tan16tan29
由公式:
tanAtanBtan(A+B)+tanA+tanB-tan(A+B)=0
∴tan16+tan29-tan(16+29)+tan16tan29tan(16+29)=0
∵tan45=1
∴tan16+tan29+tan16tan29=1

呃

time is lose
can't help you

24 years old, graduated from 2009 guangzhou vocational and technical college, major in computer technology, excellent during his college in the school computer programming and awards, university three...

名正言顺

With the name of the sun garden,changing life-style

I lost the key to brown Xiaohou ornaments lost in the playground,who saw the first requested to notify the school三年级一班heights.

拉丁语Dei sub numine viget,
英译是Under God's power she flourishes

Dear Worried, I am glad to hear from you,and I know you have some trouble in studying English and your handwriting isn't very good.But don't worry about it.Cheer up!You should learn some set phrase...

to slaughter in the name of revenge

Can I write to Mr./Ms. Wu in the name of our class?

莫名其妙的名：②说出,描述.

Dear Mr Wang:
I plan to go to China on april 28th and 29th .I hope to have a discussion on the cooperating with you.I wish to call on you on april 29th,will it be convinent to you
by the way ,would you please tell me the position of you office?
yours ,
john smith

Mr. Green, Mr.Robert from Universal Company called you at 9 a.m on January 10th,2011.Mr. Robert will come to Kunming from Hongkong and he wil discuss the detail about the cooperate according to t...

1

Dear Jenny,
Thanks for helping me look after my mom.My mom illed last week.I was very afraid of her.But as you know,I was so buzy last week.To my surprise,you came to me and took care of her with me together.you helped me make meals for my mom.And you told jokes to make my mom happy.Thanks to your help,my mom become much healthier now.
Best wishes to you.
Yours
Candy

am sending you my resume in response to your ad in the May issue of Advertising Age for a Production Artist. I believe I have the skills that your company is seeking, and would like to be considered for the position.
I have extensive layout and design experience and enjoy working on precise, detailed projects. My background in 4-color production, camera work, and desktop publishing systems would also be an asset to your company. Working under tight deadlines is the standard of the advertising industry that I come from, and is not a problem for me.
I look forward to meeting with you personally, and reviewing the needs of BT&K in greater detail. I can be reached at the above telephone number.
Let's talk soon,

Basketball Match Notice
Oil group team and our school basketball team will have a friendly match at basketball hall 16:00 on November 20, 2014 organized by Style Department of Students Union. Hope all of you can go for it and enjoy the competition.
Culture and Sports Department of Students Union
On November 16, 2014

1 L=0.2Y-5r=M/P=150/1=150 , 0.2Y-5r=150, Y=750+25r 即LM曲线；
2 M=200,同理,Y=1000+25r,与1中曲线相比,斜率相同,截距增大,即利率不变,国民收入增加；
3 对于r=10,Y=1100时,货币需求L=0.2*1100-5*10=170 ,货币供给M=200 M>L
显然货币供求不均衡.Y=1000+25r, 1100=1000+25r r=4 即利率降为4,才均衡

To:G.P.Glover & Co.
Fm:China National Imp.& Exp.Corp.
Re:Amend L/C under S/C89stx-5491
Dear sir,
We,as your request,will change the package for the goods under S/C89stx-5491.So please extend the shipmt n validity of the L/C under the S/C89stx-4591 to Aug.31,and Sep.15 .and the other terms keep unchanged.
best regds,
XXXXXXXXXX
(有效期延期至8月31日,并将议付日期延期至9月15日
应为：装运期至8月31日,并将交单有效期延期至9月15日)

实际利率与名义利率的多少不取决于计息周期的长短,而要由实际收取的利息金额决定.
比如：计息周期为一年,而实际收息周期为9各月,如果所收利息为9个月应付的利息数,那么实际利率与名义利率是一致的.如果计息周期为一年,而实际收息周期为9个月,如果所收利息为12个月应付的利息数,那么实际利率大于名义利率.
如能帮上你,可否给好评.

选A
A：刺激消费,D直接右移
B：开支增会使D右移
C：反向刺激消费,D左移
D：总可支配量不变,D基本不变

桃代李僵、冒名顶替

可以的,给一个家庭,注意姓氏后加s,表示给整个家庭写的一封信,你是正确的.

Time:April 15,2011
Subject:go to the hospital to accompany DENG Tao
Content:
Time:on April 15,2011
Reason:accompany a DengTao to the hospital
Content:
My dorm students play basketball DengTao not carefully,lead to his ankle injury.Now he is walking is not convenient,needing caring .Zhang accompanied him to the city hospital.So he can not come to class.He want take a day off to the professor,He ensures that he will make up lessons when he comes back,

Memo
To:All Staff Employees
From:Ruth Crawford
Re:Update Telephone System
Date:June 24,2007
On account of the need of business,our company is planning to update the current telephone system.There are three communication companies having offered updating plan (see attachment).Please read it carefully and give your own opinion by the end of this month.The company will place an order at the early of next month.

表述中正确的是（A.甲不承担票据责任）
(1）选项A：甲属于伪造人，由于伪造人在票据上根本没有以自己名义签章，因此不应承担票据责任；（2）选项B：乙公司属于被伪造人，持票人即使是善意取得，对被伪造人也不能行使票据权利；（3）选项CD：丙和丁属于在票据上真正签章的当事人，仍应对被伪造的票据的债权人承担票据责任。票据债权人在提示承兑、提示付款或者行使追索权时，在票据上真正签章人不能以伪造为由进行抗辩。

实际是求货币收入的流通速度,即每年内货币存量在用同概念收入流量时被换手的次数
若将名义货币供给记做Ms,则实际货币供给就为Ms/P=7500/1.5=5000=Md
V=P×M/Y=Y/（M/P）=900/5000=9/50=0.18

A girl is learning to ride a bike outside. But it is interesting to see that her parents and grandparent follow around her. What are they doing. They hold the bike carefully and tightly in case that the little girl won't fall down from it. What's more, her mother bring a medicial box with herself at all.
This cartoon reflected a very common phenomenon in china. Parents overlove their children without limitation and priciples. As a result, chinese children couldn't grow up independently and adapt to society quickly.
As far as i know, independence is a crucial criteria to judge a child whether he or she has grown up to be an adult. Therefore, what will happen if children grow without being indepent. Firstly, they won't respect their parents enough in the future. Secondly, they can't get on well with each other when they leave home. Because they will always treat theselfves as the centre part, just as their parents do at home. Thirdly, they can't get success without their parents. Whatever they do, independence is the motivation to keep them forward.
Independence makes a person strong, without it ,the children can't compete with others. At last, they will fall behind far away and be knocked out in socitey. Therefore, the right way to educate a child is to make him or her to be independent.
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大肆标榜 .
标榜.借用某种好名义,加以宣扬.

Dear Xiaoming, March 8,2009
I have receive your letter,I know you want to learn English well.Maybe I can give some suggestions for you.
Firstly,you should listen to the teacher carefully ,take notes during the lecture.
secondly,speaking English as much as possible.
Thirdly,reading book about English widely and learn more phrases by heart.
Lastly,practise writing words.Insist on reading every day in the morning.
I wish it can do some help for you.
Yours sincerely,
Xiaohua

Dear MJ,
Hi,I am Wei Yihan,from China.It is my honor to write an e-mail to you.I just want to invite you to Beijing to enjoy the Mid-Autumn Day together with us.You know that 2009 is the very year of the 60th anniversary since China is founded.And it's no doubt that there will be ceremonious festivals everywhere in China,especially in the capital -- Beijing.Thus,I hope you could come and join us,and I am sure you will definitely have a unforgettable memory after the Mid-Autumn Day.
Looking forward to hearing from you shortly and wishing you a nice day!
Sincerely,/ Blessings,/Warm Regards,
Wei Yihan

Professor John SmithShanghai University of International Studies September 10, 2010Dear Professor John Smith,On behalf of Jiangxi Normal Un...

Linda:
Hello!How are you?
I'm standing in the Beijing Park with my parents.And I'm writing this postcar to you.My mother is reading book.And my father is playing badmintonwith his friend.Today is Sturday morning.It's ten o'clock.I enjoy myself.We are very happy.
Best wishes
Lily

在翻译软件里写一篇中文的让后翻译成英语不久成了!

Memo
To:All staff Empolyees
From:Rush crawford
Re:Update the telephone system
Date:June,24,2007
As need of business,company plan to update the telephone system.We have three update plans from communications companys in the attachement.Please read carefully and give sugestions.
Please hand in suggestions in the end of this mounth,as we will purchase the new telephone system in the early of next month!

略

Dear students,
The school had decided to organize the 8th grade students to watch the soccer match tomorrow held in the Sports Center near the school. Please get together at the school gate in the afternoon; thwn we will walk there. You may bring some drinking water as well.
Thanks

你好，亲爱的老朋友。不知道我们有多久么有这样得写信聊天了？你是否想念我呢？不要这次要告诉你个消息。我决定不在做信客了。你一定会问我为什么。因为……其实我也不知道。我只是想我只是想换种方法生活。不再窝缩在这芶叫旮旯的一处，我想环游世界。环游这个大千世界。这段日子里，我不能再和你写信交流了。但我相信。我是有缘的会再见。当我们重逢那天我必会和你讲述我的经历。 致我亲爱的朋友。

Dear the Smiths,
Thank you for your.I have already been to my home safely.You needn't worry about me.
Without your help,I think I won't .Thank you very much.And I plan to visit you all

Dearn Linda,
I read your problem from the Newsletter.In my opinion,it is silly to argue with your mother.I used to have the same kind of problem as you.I used to wear ripped jeans and my parents disliked them.I showed them some pictures of teens wearing ripped jeans from magazines,and I told them my ideas about clothes.Finally they accepted the fact that I am no longer a child and I needed them to respect my choice.
Arguing is not helpful.Try to talk with your parents in a friendly way.Good luck to you!
Yours,
Mei
【英语牛人团】倾情奉献,

分别用 ER 表示名义汇率；EX 表示出口值；IM 表示进口值
下表为EVIEWS计算出的相关系数矩阵
ER ,EX ,IM
ER | 1.000000 ,-0.871707 ,-0.813919
EX | -0.871707 ,1.000000 ,0.992905
IM | -0.813919 ,0.992905 ,1.000000
汇率和出口的相关系数为 -0.871707,即汇率和出口有较强的负相关；
汇率和进口的相关系数为0.992905,即汇率和进口有很强的正相关.
下面是ER关于EX和IM的线性回归结果：
ER = 8.33467522 - 0.000379187592*EX + 0.0003972764046*IM
EX和IM 的t 值 分别为 -5.753858（prob=0.0012）；4.671291（prob=0.0034）
括号内是小概率,说明出口和进口对汇率都很显著的影响,只不过影响的方向相反.

Nowdays,most of students think they are healthy ,so they don't like doing exerises.I will tell these students some advantages of doing exerises. At these days ,most of students pay more attentions on...

自己写吧。

不交了

Dear John:
Long time no see. How is it going? Do you remember me? I am Wang Gang.
I remember that you like make friends with others. So today let me introduce a new friend to you,you will be interested with him.
His name is Li Qiang, an interesting boy in our class. There is always a big smile on his face.He likes playing basketball and soccer. He likes reading English novels. We all like him in our class as he is pleased to help other students and be kind to everyone. He is really easy to get along with.yesterday I tell him something about you and to my surprise he wanted to make friends with you. Do you want to know more about him? Write to me soon. We are waiting for your reply.
Best wishes to you.
Yours
Wang Gang