远程输电,为什么要用高压输电线?

英语翻译
帮忙翻译一句话：”化繁为简,尽在掌控“
翻译成英文
希望尽量简练,又能表达出原句的意思.
产品是一种可以远程操作多台电脑的控制器

高二物理变压器与发电机
一发电机的输入电压为550V,输入功率为160KW,通过升压变压器后向远程输送,已知输电线的总电阻为5欧,要是输电线上损失的功率不超过发电机组输出功率的5%那么升压变压器原副线圈的匝数比不能超过何值?

远程控制阀上面的这些英文诗什么意思
S/N：1007145.001.01 ；MK:MK1 ；SZ:6″； CLASS：CL150； T/N:35； CV：230 ；CHAR：Equal；AIR TO：Open；SIGNAL:； BODY:DUPLEX；TRIM：Duplex； P.O.O11 2JA8430 Sup ooo

远程电力传输一般采用50-100万伏的高电压,其主要原因是： A．确保远程电力传输的安全 B．减少传输线路上
远程电力传输一般采用50-100万伏的高电压,其主要原因是：
A．确保远程电力传输的安全 B．减少传输线路上的电能损失
C．节约传输线路上的设备和材料 D．减少雷电对传输线路的破坏

英语翻译
利用互联网进行的买卖就叫电子商务.
即利用计算机技术、网络技术和远程通信技术,实现整个商务活动过程中的电子化、数字化和网络化.
其特点是不受时间空间的限制,快速流通和低廉的价格,符合人们追求时尚、讲究个性的要求.

电磁波用于超远程通信的波段名称是______，用于无线电广播和电报的波段名称是______，用于电视和宇航通讯的波段名称是______．

大工11春 大学英语1(远程英语1) 在线作业2
一、单选题（共 10 道试题,共 60 分.）V 1. His oral English is _____ than his brother's.
A. well
B. good
C. better
D. fine
满分：6 分
2. We must ____ the project within 10 days.
A. completing
B. complete
C. to complete
D. completed
满分：6 分
3. I would rather _____ a job and earn money.
A. to find
B. finding
C. found
D. find
满分：6 分
4. He practices hard. I can hear him _____ every day.
A. to sing
B. sing
C. sings
D. to sings
满分：6 分
5. He keeps working late in the night _____ catch up with others.
A. in order to
B. for
C. so as to
D. both A and C
满分：6 分
6. I am sorry ____ you so much trouble.
A. to give
B. to have given
C. to giving
D. to have giving
满分：6 分
7. Don't forget ____ the door when you leave.
A. to lock
B. lock
C. locking
D. locked
满分：6 分
8. The school requests every student to ______ the sports meeting.
A. take part
B. take in
C. take part in
D. part in
满分：6 分
9. I take the other way to school so as to avoid _____ with him.
A. to meet
B. meeting
C. having meet
D. have met
满分：6 分
10. My dream is to travel ______ the world.
A. for
B. round
C. around
D. in
满分：6 分
二、判断题（共 10 道试题,共 40 分.）V 1. Is China the third largest country in the world?
A. 错误
B. 正确
满分：4 分
2. They preferred the book translate by my sister.
A. 错误
B. 正确
满分：4 分
3. Building in 1991, this building is now 20 years old.
A. 错误
B. 正确
满分：4 分
4. The Second World War broke out in 1939.
A. 错误
B. 正确
满分：4 分
5. I want to have my hair cut after the new year.
A. 错误
B. 正确
满分：4 分
6. In the house, we found lots of food leaving by the host.
A. 错误
B. 正确
满分：4 分
7. You have been working for a long time. Why not stop having a rest?
A. 错误
B. 正确
满分：4 分
8. Would you remember to throw away the garbage?
A. 错误
B. 正确
满分：4 分
9. The murder was seen jumping out of the window.
A. 错误
B. 正确
满分：4 分
10. The film plays the big part in the lives of urban people.
A. 错误
B. 正确
满分：4 分

英语翻译
随着计算机技术的广泛普及和计算机远程信息处理的应用的发展,数据通信应运而生,它实现了计算机与计算机之间,计算机与终端之间的传递.由于不同的业务需求的变化及通信技术的发展使得通信经过了不同的发展历程

鸟类远程迁途的过程中为什么不会迷失方向
如大雁·!

远程输电,为什么要用高压输电线?
应该与电阻有关吧?

大工13秋《大学英语1（远程英语1）》在线测试3
5. The result of the test was rather _______. A. disappointed 一、单选题（共 20 道试题，共 80 分。） 1. No permission has _____ to anybody to enter the building. A. been given B. given C. to give D. be giving 2. Chinese married couple _____ red packets to children and the unmarried during the Chinese new Year. A. give B. have been giving C. are giving D. have given 满分：4 分 3. Here are some new computer 一、单选题（共 20 道试题，共 80 分。）
V
1. No permission has _____ to anybody to enter the building.
A. been given
B. given
C. to give
D. be giving
满分：4 分
2. Chinese married couple _____ red packets to children and the unmarried during the Chinese new Year.
A. give
B. have been giving
C. are giving
D. have given
满分：4 分
3. Here are some new computer programs _______ for home buildings.
A. designing
B. design
C. designed
D. to design
满分：4 分
4. ______ it was yesterday because of the storm!
A. What bad weather
B. What a bad weather
C. How bad a weather
D. How bad weather
满分：4 分
5. The result of the test was rather _______.
A. disappointed
B. disappointing
C. being disappointed
D. disappoint
满分：4 分
6. ______ anything about the accident, he went to work as usual.
A. Not known
B. Known not
C. Knowing not
D. Not knowing
满分：4 分
7. I don't know whether to stay in teaching or ______ another job.
A. trying getting
B. to try to get
C. trying to get
D. try get
满分：4 分
8. She ______ her mother's work since she was admitted into hospital.
A. is doing
B. has been doing
C. has done
D. has been done
满分：4 分
9. The visiting Minister expressed his satisfaction with the talks, ______ that he had enjoyed his stay here.
A. having added
B. to add
C. adding
D. added
满分：4 分
10. The purpose of the scheme is not to help the employers but ______ work for young people.
A. provide
B. to provide
C. providing
D. provided
满分：4 分
11. We have sometimes accidents on this line, but no accidents ______ since last winter.
A. occur
B. have occurred
C. have been occurring
D. are occurring
满分：4 分
12. Please make my excuse at tomorrow's meeting. I've got too much work _______.
A. to do to come
B. doing coming
C. to do coming
D. do coming
满分：4 分
13. We are going to talk about the problem _____ at the last meeting.
A. was discussed
B. discussing
C. discussed
D. had been discussed
满分：4 分
14. — A man was killed. — Where is the body of the ______ man?
A. murder
B. murdered
C. murdering
D. having murdered
满分：4 分
15. What an _____ game! I'm really _____ at it.
A. excited; excited
B. exciting; excited
C. excited; exciting
D. exciting; exciting
满分：4 分

为了减小输电线路上的电能损耗，在远程送电时都采用高压输电．已知一座发电厂将电能输送到某地，输送功率为2.2×10³kW，所用输送电压为1.1×10⁵V．
（1）求出该线路的输送电流；
（2）若输电线路的总电阻为15Ω，则每小时在输电线路上损失的电能为多少？这些电能能使“220V、100W”的灯泡连续工作多长时间？
（3）已知同种材料制成的导线，电阻与导线的长度成正比，与导线的横截面积成反比．在一次冻雨过后，输电线的长度被拉长了10%．请你根据所给信息，谈谈冻雨过后电力部门更换输电线的必要性．

（2009•广东模拟）如图所示，从地面上A点发射一枚远程弹道导弹，在引力作用下，沿ACB椭圆轨道飞行击中地面目标B，C为轨道的远地点，距地面高度为h．已知地球半径为R，地球质量为M，引力常量为G．设距地面高度为h的圆轨道上卫星运动周期为T₀．下列结论错误的是（　　）
A．导弹在C点的速度大于

GM R+h

B．导弹在C点加速度等于

GM

(R+h)2

C．地球球心为导弹椭圆轨道的一个焦点
D．从A点到B点的时间一定小于T₀

如图所示，从地面上A点发射的一枚远程弹道导弹，在引力作用下沿ACB椭圆轨道飞行击中地面目标B，C为轨道的远地点，距地面高度为h．已知地球半径为R，地球质量为M，引力常量为G．设距地面高度为h的圆轨道上卫星运动周期为T 0 ，则导弹在C点的加速度等于______，导弹从A点运动到B点的时间______（填大于、等于、小于）T 0 ．

空分装置远程控制阀名牌上面的这些英文是什么意思,
Serien-Nr./Serial No.:H4261.001-01; Type/Model:0415P5; Federber.Spring range,bar:1.6-2.4
Kegel,Sitz/Plug,seat:1.4122/1.4541-Alloy6; Luftausfall/Air failure:Close Zuluft/Supply,bar:3.4
KVS:40 Lin; DN/Size:150; Hub/Stroke,mm:40; PN/Class:100; TFR:05 ATEX 017
ll 2GD c llC (T6/T5/T4)

在因特网上,一台计算机可以作为另一台主机的远程终端,使用该主机的资源,该项服务称为 A）Telnet B）BBS
在因特网上,一台计算机可以作为另一台主机的远程终端,使用该主机的资源,该项服务称为
A）Telnet B）BBS
C）FTP D）WWW

下列各句中,没有语病的一句是
a.正因为阻力极其微弱,空气极其稀薄,所以这里是远程火箭和人造卫星活动的好场所.
b.前不久,在美国召开的有27个***数百位科学家参加的第三届国际固氮学术会议上,这两个模型受到了高度重视,给予很高的评价.
c.我们不赞成应试教育,决不是主张取消考试,而是不赞成以应付升学考试为唯一目的,围绕应考开展教学活动的做法.
d.近日国际黄金价格再次出现波动,截至上周末,国际黄金市场的价格上涨最高点已达290美元以上.

求 大工13春《大学英语1（远程英语1）》在线测试1
一、单选题（共 20 道试题,共 80 分.）V1."______ you angry then?" "They _____ too much noise."A.Are; were makingB.Were; were makingC.Are; madeD.Were; made 满分：4 分2.The Young Pioneer _______ water for the old man every day.A.carryB.bringC.takesD.carries 满分：4 分3.Some are ______ in the river and some are ______ games.A.swimming; playingB.swimming; plaiingC.swiming; playingD.swimming; plaing 满分：4 分4.The People's Republic of China ______ on October 1,1949.A.foundB.was foundedC.is foundedD.was found 满分：4 分5.The boy ______ English on the radio when I ______ his door.A.learned; was openingB.was learning; openedC.learned; openedD.is learning; open 满分：4 分6.I will tell him as soon as he ______ back.A.comeB.comesC.will comeD.came 满分：4 分7.Nobody ______ how to run this machine.A.knowB.have knownC.knowsD.is knowing 满分：4 分8.We ______ for Tom at ten last Sunday.He often kept us ______.A.were waiting; waitingB.were waiting; waitC.waited; waitingD.waited; wait 满分：4 分9.______ your mother ______ some cleaning on Sundays?A.Does; doesB.Do; doesC.Does; doD.Do; do 满分：4 分10.Neither I nor he ______ French.A.speakB.doesn't speakC.speaksD.doesn't speak 满分：4 分11.______ your teacher ______ from them very often?Certainly.A.Do; hearB.Does; hearC.Do; receiveD.Does; receive 满分：4 分12.We'll go to play with snow if it ______ tomorrow.A.snowB.snowsC.will snowD.snowed 满分：4 分13.Mr.Smith does not go fishing on weekdays,______?______,he does.A.does he; NoB.does he; YesC.doesn't he; NoD.doesn't he; Yes 满分：4 分14.______ he ______ himself there?No,I don't think so.A.Do; enjoyB.Does; enjoiesC.Does; enjoysD.Does; enjoy 满分：4 分15.Mary ______ on shoes when she ______ them.A.tries; buysB.tries; buiesC.trys; buysD.trys; buies 满分：4 分16.When you ______ at the door,I ______ some washing.A.knocked; didB.was knowcking; didC.knocked; was doingD.knock; am doing 满分：4 分17.English ______ in Canada.A.speaksB.are spokenC.is speakingD.is spoken 满分：4 分18.This time yesterday Jack ______ his bike.He ______ TV.A.repaired; didn't watchB.was repairing; watchedC.repaired; watchedD.was repairing; wasn't watching 满分：4 分19.He usually ______ TV on Sunday evening.A.watchB.watchesC.watchingD.is watching 满分：4 分20.The girl often ______ cold when she ______.A.catchs; dancesB.catches; dancesC.catchs; danceesD.catches; dancee 满分：4 分 ‍

如图所示，从地面上A点发射一枚远程弹道导弹，在引力作用下，沿ACB椭圆轨道飞行击中地面目标B，C为轨道的远地点，距地面高度为h。已知地球半径为R，地球质量为M，引力常量为G。设距地面高度为h的圆轨道上卫星运动周期为T 0 。下列结论正确的是

[ ]

A．导弹在C点的速度大于 B．导弹在C点的加速度等于 C．地球球心为导弹椭圆轨道的一个焦点 D．导弹从A点运动到B点的时间一定小于T 0

电磁波用于超远程通信的波段名称是______，用于无线电广播和电报的波段名称是______，用于电视和宇航通讯的波段名称是______．

今天，互联网发展迅速，对我们的生活影响日益深远，在网络上，出现的心理咨询、网上购物、电子图书、网络杂志、网络交友、远程教育等，方便了我们的生活、学习和工作。这些说明网络的作用有

[]

A．网络具有两面性，是一把双刃剑 B．网络可以丰富我们的生活，扩展我们的视野，方便我们与外界的联系 C．网络为我们丰富多彩的生活提供了便捷的工具 D．网络沟通无极限

远程输电为了减少损耗可以增大电压,但是不能增大电流
因为Q=I^2RT
但是电压增大了,根据欧姆定律,电流不是必要增大吗

用英语怎么说?“有一天,我们将告别一切,独自踏上未来的远程,当看到那些空荡荡的桌子,再也不用因为上课铃而飞奔了,不会在操场上你追我赶了...也许 一切早已不复存在了.但,请别哭..

大工11春《大学英语1（远程英语1）》在线作业2,
1.His oral English is _____ than his brother's.
A.well
B.good
C.better
D.fine
满分：6 分
2.We must ____ the project within 10 days.
A.completing
B.complete
C.to complete
D.completed
满分：6 分
3.I would rather _____ a job and earn money.
A.to find
B.finding
C.found
D.find
满分：6 分
4.He practices hard.I can hear him _____ every day.
A.to sing
B.sing
C.sings
D.to sings
满分：6 分
5.He keeps working late in the night _____ catch up with others.
A.in order to
B.for
C.so as to
D.both A and C
满分：6 分
6.I am sorry ____ you so much trouble.
A.to give
B.to have given
C.to giving
D.to have giving
满分：6 分
7.Don't forget ____ the door when you leave.
A.to lock
B.lock
C.locking
D.locked
满分：6 分
8.The school requests every student to ______ the sports meeting.
A.take part
B.take in
C.take part in
D.part in
满分：6 分
9.I take the other way to school so as to avoid _____ with him.
A.to meet
B.meeting
C.having meet
D.have met
满分：6 分
10.My dream is to travel ______ the world.
A.for
B.round
C.around
D.in
满分：6 分

小明家有爷爷、爸爸和妈妈四口人，爷爷患有心脏病，妈妈时常会晕车，现一家四口准备远程旅游，请你为小明设计合理的一个旅游小药箱。（选择的用具及药品有：酒精、酒精棉、体温表、胃痛用药、创口贴、纱布、剪刀、止泻药、感冒药、碘酒、红花油、乘晕宁、***、烫伤膏） 要求：（1）医用器具、内服药、外用药，至少准备四种 （2）药品配合要有针对性、实用性、急救性

大工13秋《大学英语1（远程英语1）》在线测试1
一、单选题
1.______ he ______ himself there?no,i don't think so.
a.do; enjoy
b.does; enjoies
c.does; enjoys
d.does; enjoy
2.______ that dress when i first saw you at the station?
a.were you wearing
b.have you worn
c.did you wear
d.do you wear
3.english ______ in canada.
a.speaks
b.are spoken
c.is speaking
d.is spoken
4.when you ______ at the door,i ______ some washing.
a.knocked; did
b.was knowcking; did
c.knocked; was doing
d.knock; am doing
5.perhaps it will be a long time ______ from abroad.
a.when tom comes back
b.when tom will come back
c.before tom comes back
d.that tom comes back
6.neither i nor he ______ french.
a.speak
b.doesn't speak
c.speaks
d.don't speak
7.— when did you go to work?— as soon as they came,we ______ to work.
a.went
b.were going
c.had gone
d.go
8.the boy ______ english on the radio when i ______ his door.
a.learned; was opening
b.was learning; opened
c.learned; opened
d.is learning; open
9.one of the statements ______ to be untrue.
a.is turned out
b.has turned out
c.have been turned out
d.have turned out
10.in the past 30 years china ______ great advances in the socialist *** and socialist construction.
a.has made
b.have made
c.had made
d.having made
11.he usually ______ tv on sunday evening.
a.watch
b.watches
c.watching
d.is watching
12.he said that he dropped his bag when he ______ for the bus.
a.are running
b.was running
c.were running
d.is running
13.mary ______ on shoes when she ______ them.
a.tries; buys
b.tries; buies
c.trys; buys
d.trys; buies
14.my english teacher ______ my test.
a.has not yet graded
b.has not yet been graded
c.is not yet to be graded
d.is not yet graded
15.______ your teacher ______ from them very often?certainly.
a.do; hear
b.does; hear
c.do; receive
d.does; receive
16."______ you angry then?" "they _____ too much noise."
a.are; were making
b.were; were making
c.are; made
d.were; made
17.______ your mother ______ some cleaning on sundays?
a.does; does
b.do; does
c.does; do
d.do; do
18.mr.wu ______ to work by bus every day.
a.has been traveling
b.has traveled
c.travels
d.is traveling
19.mr.smith does not go fishing on weekdays,______?______,he does.
a.does he; no
b.does he; yes
c.doesn't he; no
d.doesn't he; yes
20.shanghai ______ on the huangpu river.
a.stand
b.stands
c.is being stand
d.has stood

理工远程工科概率统计求答案 第1题 单选题 若事件A与B互斥,且知P(A)=0.6,P(B)=0.2,则P(A
第1题
单选题
若事件A与B互斥,且知P(A)=0.6,P(B)=0.2,则P(A+B)=（ ）.
1.0.68
2.0.92
3.0.4
4.0.8
x05
第2题 x05
单选题
在10件同类型产品中有7件一等品,3件二等品.今从中任取4件,则所取的4件产品中有一件是二等品的概率是（ ）.x05
x05
1.
2.
3.
4.
x05
第3题 x05
单选题
某人对同一目标进行6次独立射击,每次命中率都是0.7.则6次射击中正好命中目标2次的概率是（ ）.x05
x05
1.
0.720.34
2.
3.
4.
0.72
x05
第4题 x05
单选题
已知 ,则P(A+B)=（ ）.
x05
1.0.9
2.0.5
3.0.7
4.1.1
x05
第5题 x05
单选题
袋中有4个白球,8个红球.甲先从中任取一个球取后不放回,再放入二个与所取的球的颜色相反的球.（即取出一个白球放入二个红球,取出一个红球放入二个白球）然后乙从袋中任意取一球,则乙取出的一球是白球的概率是（ ）.x05
x05
1.
2.
3.
4.
x05
第6题 x05
单选题
甲、乙二人同时回答某个问题.甲答对的概率是0.8,乙答对的概率是0.7 .则它是由甲答对的概率是（ ）.x05
x05
1.
2.
3.
4.0.8
x05
第7题 x05
单选题
某射手每发子弹击中目标的概率为0.7 ,今对靶独立重复射击20发子弹,中靶次数 的分布律为：P(X=k)= （ ）x05
x05
1.
2.
3.
4.
,(k=0,1...20)
x05
第8题 x05
单选题
设随机变量X的概率密度为 则常系数A=( ) .
x05
1.
3/4
2.
5/8
3.
3/8
4.
1/4
x05
第9题 x05
单选题
设随机变量X的概率密度是 则X的分布函数是（ ）.x05
x05
1.
2.
3.
4.
x05
第10题 x05
单选题
若随机变量X服从正态分布N（10,4） ,则Y=3X+2服从的分布是（ ）.x05
x05
1.N（30,12）
2.N（30,36）
3.N（32,36）
4.N（32,12）
第2题 x09
单选题
在10件同类型产品中有7件一等品，3件二等品。今从中任取4件，则所取的4件产品中有一件是二等品的概率是（）。

一道物理远程输电题,
某输电线路,在电网改造前输电电压为U,输电线的总电阻为r,当输送的总功率为Po时,线路上损耗的功率为P.在电网改造工程中,更换了升压变压器,更新了老化的电缆,将U提高到4U,r减小到2r/3,则电网改造后,当输送的总功率为2Po时,线路上损耗的功率为
A.2P/3
B.P/6
C.P/3
D.P/24

大工11秋《大学英语1（远程英语1）》在线测试2
大工11秋《大学英语1（远程英语1）》在线测试1-2的!

（2014•甘肃模拟）如图所示，从地面上A点发射一枚远程地对地弹道导弹，仅在万有引力作用下沿椭圆轨道ABC飞行击中地面目标C，轨道远地点B距地面高度为h．已知地球的质量为M、半径为R，引力常量为G．设导弹经A、B点时速度大小分别为v_A、v_B．下列说法中正确的是（　　）
A．地心O为导弹椭圆轨道的一个焦点
B．速度v_A＞11.2km/s，v_B＜7.9km/s
C．导弹经B点时加速度大小为[GM(R+h)2

英语翻译
web服务不但操作方便,而且可以实现对现场的远程监控,甚至可以向监控设备发送指令
Web services is not only easy to operate,and can achieve the remote monitoring of the scene,or even send commands to the monitoring equipment

大工11春《大学英语1（远程英语1）》在线作业3
1.Per capita GDP in China was left far _____ developed countries.A.to
B.from
C.behind
D.into
满分：6 分
2.This is my wife.I made _____ acquaintance when I was traveling.A.she
B.her
C.it
D.the
满分：6 分
3.The teacher is _____ to teach the students how to learn.A.suppose
B.supposing
C.supposed
D.supposes
满分：6 分
4.He ______ to work in New York,but now he is in London.A.used
B.uses
C.was used
D.was using
满分：6 分
5.Not only the director _____ the main actor was deeply touched by the little boy.A.and
B.while
C.but also
D.too
满分：6 分
6.The earth ____ around the sun.A.revolved
B.revolves
C.is revolved
D.was revolved
满分：6 分
7.The policy of reform and opening up has a positive ____ on Chinese economic development.A.role
B.impact
C.impress
D.future
满分：6 分
8.The box is filled ______ all kinds of letters from various places.A.of
B.with
C.in
D.at
满分：6 分
9._______ the truth,she decided to call the police.A.Witness
B.Having witnessing
C.Having witnessed
D.To witness
满分：6 分
10.Translation is interesting _____ challenging.A.as
B.as well
C.also
D.as well as
满分：6 分