北航的系怎么分的啊人都说北航1系2系.搞不懂每个系都是什么 请那位北航学长帮忙解释下

北航15年6月《大学英语2》作业考核试题
19、
Is thereany hope of（ ）the gold medal?
A Grace to win
B Grace win
C winning Grace
D Grace’s winning
22、
（ ）Adam started finding a job.
A. All the money being spent
B. All the money having been spent
C. All the money spend
D. Spending all the money
23、
Peter wasfinishing his homework when his mother（ ）home from supermarket.
A. comes
B. came
C. has come
D. is coming
24、
She is a famousdoctor, but she couldn’t give a definite explanation when about the cause of cancer.
A. asked
B. be asked
C. asking
D. to ask
知道的告诉下，谢谢。

北航物理实验
拉伸法测钢丝弹性模量
扭摆法测量转动惯量
弯曲法测横梁弹性模量(霍尔传感器法)
弯曲法测横梁弹性模量(弯曲仪法)
测量冰的溶解热实验
电热法测量焦耳热功当量实验
稳态法测量不良导体的热导率实验
模拟示波器的使用(必做)
模拟示波器测量二极管伏安特性
模拟示波器测量声速
数字示波器测量声速
数字示波器测量微积分波形
数字示波器测量同轴电缆传播速度
伏安法测中电阻
惠斯通电桥测中电阻
半偏法测检流计内阻与电流常数
伏安法测高(低)电阻
双电桥改单电桥测中电阻
双电桥测低电阻
自组电位差计测干电池电动势(必做)
箱式电位差计测干电池电动势
箱式电位差计测固定电阻
箱式电位差计测电表内阻
物距像距法测量透镜焦距
自准直法测量透镜焦距
共轭法测量凸透镜焦距
单球面镜焦距的测量
平行光管法测量凸透镜焦距
平行光管法测量凹透镜焦距
分光仪的调整(必做)
测量三棱镜的顶角
最小偏向角法测量棱镜的折射率
掠入射法测量棱镜的折射率
平板玻璃折射率的测量
激光双棱***涉
激光劳埃***涉
钠光双棱***涉
钠光劳埃***涉
迈克尔逊干涉（必做）
牛顿环干涉
劈尖干涉
分光仪的调整(必做)
测量三棱镜的顶角
最小偏向角法测量棱镜的折射率
掠入射法测量棱镜的折射率
平板玻璃折射率的测量
迈克尔逊干涉（必做）
牛顿环干涉
劈尖干涉

下面是《中国青年报》报道的温家宝总理与北航学生谈心的一段讲话。根据语境． 在空格内填入关联词语恰当的一项是 ( ) 我为什么开始就讲要树立信心，而且反复讲，到处讲，讲信心比货币比黄金 还重要，就是一个民族、一个国家在困难的时候，失掉信心，那么 失掉了一切，有了信心，才有力量的源泉，才有勇气。 我要说有信心，针对当前应对金融危机困难，要面向未来长远 发展。我相信你们只要好好学习，就个定会有用武之地。 A 因为 如果 就 不仅 而且 B 如果 就也就不仅 还 C 如果 就也就 不但 而且 D 因为 假如 也既又

北航10秋学期《西方经济学（上）》在线作业三 判断题
二、判断题（共 6 道试题,共 24 分.）V 1.经济利润中不包括正常利润.（ ）A.错误
B.正确
满分：4 分
2.寡头垄断市场上的产量是由各寡头之间协商确定的.（ ）A.错误
B.正确
满分：4 分
3.垄断市场的垄断程度最高,寡头市场居中,垄断竞争市场最低.（ ）A.错误
B.正确
满分：4 分
4.垄断竞争市场上长期均衡的条件MR=MC=AR=AC.（ ）A.错误
B.正确
满分：4 分
5.效用是指商品满足人的欲望的能力,是消费者的一种主观心理评价.（ ）A.错误
B.正确
满分：4 分
6.沉没成本等同于机会成本.（ ）A.错误
B.正确
满分：4 分
不过好像不是太理想。

北航《微积分（上）》在线作业三
一、单选题（共 5 道试题,共 30 分.）
V
1.设函数f(x)在[-a,a](a>0)上是偶函数,则 |f(-x)| 在[-a,a]上是 ( )
A.奇函数B.偶函数C.非奇非偶函数D.可能是奇函数,也可能是偶函数 满分：6 分2.f(x)是给定的连续函数,t>0,则t∫f(tx)dx ,积分区间（0->s/t）的值（ ）
A.依赖于s,不依赖于t和xB.依赖于s和t,不依赖于xC.依赖于x和t,不依赖于sD.依赖于s和x,不依赖于t 满分：6 分3.下列函数中 （ ）是奇函数
A.xsinxB.x+cosxC.x+sinxD.|x|+cosx 满分：6 分4.设f(x)=e^(2+x),则当△x→0时,f(x+△x)-f(x)→( )
A.△xB.e2+△xC.e2D.0 满分：6 分5.已知函数y= 2cos3x-5e^(2x),则x=0时的微分dy=（ ）
A.10B.10dxC.-10D.-10dx 满分：6 分
二、判断题（共 10 道试题,共 70 分.）
V
1.周期函数有无数个周期
A.错误B.正确 满分：7 分2.函数y=tan2x+cosx在定义域上既不是增函数也不是减函数
A.错误B.正确 满分：7 分3.对函数y=2008+x-sinx求导可得y′=1-cosx
A.错误B.正确 满分：7 分4.一元函数可导的充要条件是左右导数都存在且相等.
A.错误B.正确 满分：7 分5.微分的几何意义就是当横坐标改变时,切线纵坐标的改变量.（ ）
A.错误B.正确 满分：7 分6.一元函数可导必连续,连续必可导.
A.错误B.正确 满分：7 分7.一般地说,对于映射f（即函数）,如果它具有逆像的唯一性,那么,按照逆像的对应关系就得到它的逆映射
A.错误B.正确 满分：7 分8.在区间[0,1]上,函数y=x+tanx的导数恒大于0,所以是区间[0,1]上的增函数,从而最大值为1+tan1.
A.错误B.正确 满分：7 分9.一般情况下,对于可导函数y=f(x),dy=f′(x)dx
A.错误B.正确 满分：7 分10.定义在一个对称区间(-a,+a)上的任意一个函数都可以分解为一个奇函数和一个偶函数的和.
A.错误B.正确 满分：7 分

北航12年6月课程考试《大学英语预备级2》考核试题
1.“（ ）the blue bus come here ” “ Every twenty minutes .” A.How fass has B.How soon will C.How long is D.How often does 满分：2 分
2.（ ）helping a child in danger on the street,he was knocked down by a car.A.By B.During C.At D.While 满分：2 分
3.Jim suggested that they（ ）their supper.A.had B.would have C.should have D.should have eaten 满分：2 分
4.You used to play basketball when you were young ,（ ） you A.were B.weren ’ t C.used D.didn ’ t 满分：2 分
5.A:Are you satisfied with her work,sir?B:Not at all.It couldn't be any（ ）.A.better B.best C.worse D.worst 满分：2 分
6.I don’t know where （ ）going.A.will she B.she will C.is she D.she is 满分：2 分
7.“Where（ ）my　umbrella?”“Somebody（ ）it　away　by　mistake.” A.is,　must　have　taken B.is,　must　take C.have　been,　must　take D.is,　takes 满分：2 分
8.Before he left the White House,the President made a（ ）speech.A.quarrel B.symbol C.automobile D.farewell 满分：2 分
9.During the graduation（ ）,the president gave a wonderful opening speech.A.evolution B.sign C.individual D.ceremony 满分：2 分
10.Even though he knew that I should study,he still（ ）me to go to the movies.A.recognized B.extended C.persuaded D.unexpected 满分：2 分
11.The teacher told us an（ ）story the other day.A.interesting B.interested C.being interested D.having interested 满分：2 分
12.I’ll never forget （ ）you for the first time.A.meeting B.driving C.drive D.being driven 满分：2 分
13.Even though he has lived in China for many years,Mark still can not（ ）himself to the Chinese customs.A.adopt B.adjust C.adapt D.accept 满分：2 分
14.（ ）is no good leaving today ’ s work for tomorrow .A.This B.What C.That D.It 满分：2 分
15.As a commander,you should not（ ）the soldiers to unnecessary danger.A.express B.explode C.exploit D.expose 满分：2 分
16.By the time we got to the cinema the film（ ）for half an hour.A.has begun B.had begun C.has been on D.had been on 满分：2 分
17.（ ）doesn ’ t matter whether I attend the meeting or not .A.This B.That C.I D.It 满分：2 分
18.Nothing but books （ ）sold in this shop.A.be B.is C.are D.to be 满分：2 分
19.（ ）an exciting city Shanghai is!A.So B.Very C.How D.What 满分：2 分 20.Although in great danger,the wounded still did not want to（ ）from the front.A.feedback B.backward C.withdraw D.departure 满分：2 分
谢谢大哥哥姐姐.

北航09春学期《大学英语1》作业一
1. This TV program is very good. Everybody in my family ____it.
A. to watch
B. watches
C. watchs
D. watched
满分：4 分
2. People in the country always have____food.
A. fresh
B. nice
C. good
D. modern
满分：4 分
3. Let‘s go. Look,____car is outside ____airport.
A. the,the
B. the, an
C. a, an
D. a, the
满分：4 分
4. Mr. Green____some questions about the Mid-Autumn Day.
A. have
B. to have
C. has
满分：4 分
5. This is ____ first Mid-Autumn Day for Mr Green in China .
A. the
B. a
C. /
满分：4 分
6. The friendship of John and Lily is ____.
A. coming to end
B. coming an end
C. coming to an end
满分：4 分
7. --You‘ve been very busy lately. --So busy I haven‘t had time to clean my house. There is ____wherever you look.
A. dust
B. dusty
C. a dust
满分：4 分
8. Do you help each other? Yes,____.
A. I do not
B. we do not
C. I do
D. we do
满分：4 分
9. People ____ the Mid-Autumn Day with their family
A. celebrate
B. celebrates
C. to celebrate
满分：4 分
10. The students ____to have a party, They did it last week.
A. planed
B. planned
C. plan
满分：4 分
11. ____the teacher____at this college last year? Yes, he did.
A. Did, taught
B. does, teach
C. Did, teach
满分：4 分
12. ____this flower symbolize something happy?
A. Is
B. Do
C. Does
满分：4 分
13. Is this ____apple tree? No, ____tree is____orange tree.
A. an,a, the
B. a, the, an
C. an, the, an
D. the, the, an
满分：4 分
14. The president ____to help the English teacher with all the questions.
A. trys
B. try
C. tries
满分：4 分
15. Many Chinese family eat mooncakes____the moonlight on Mid-Autumn Day.
A. on
B. under
C. in
D. at
满分：4 分
16. My friend ____ to visit the Great Wall, too.
A. does not plan
B. plan not
C. not plans
D. plans
满分：4 分
17. ____there many trees on the campus? No, but now we have many everywhere.
A. Were
B. Had
C. Did have
满分：4 分
18. lily____ to the beach with Prof.Green. They had a swim there.
A. goed
B. goes
C. went
满分：4 分
19. We ____ in the sea, The water was too cold
A. swam not
B. didn‘t swim
C. didn‘t swam
满分：4 分
20. London is ____nice city, and it is ____ old city, too.
A. a, an
B. an,a
C. the, a
D. a,the
满分：4 分
21. ____your father always____around the park?
A. Does...jog
B. Do ...jogs
C. Does...jogs
D. Do ... jog
满分：4 分
22. ____do people go home on Mid-Autumn Day?
A. Why
B. Where
C. What
满分：4 分
23. We have a dinner party this evening . Would you like to join____?
A. we
B. us
C. our
满分：4 分
24. Many young people____country life.
A. does not like
B. do not like
C. not like
D. not likes
满分：4 分
25. ____you____in the library this morning?
A. Do, studied
B. Did, studied
C. Did, study
满分：4 分

北航13年英语在线作业三 求高手解答
1. （ ）the teacher（ ）at this college last year? Yes, he
did.
A. Did, taughtB. does, teachC. Did,
teachD. Does,taught 满分：4 分2. His plane is due at 10. Listen,（ ）plane is in at（
）airport.
A. a,aB. the,theC. the, anD. a,an 满分：4 分3. She （ ）very hard and I （ ）very hard too.
A. study, studyB. studies, studiesC. studies, studyD. study, studies 满分：4 分4. （ ）to the Chinese Culture Club. You can learn
Beijing opera here.
A. ComingB. WelcomeC. Well comeD. Will come 满分：4 分5. Even on Sundays, fewer people go to（ ）church than
before. .
A. theB. aC. /D. an 满分：4 分6. Is this （ ）apple tree? No, （ ）tree is（ ）orange tree.
A. an,a, theB. a, the, anC. an, the, anD. the, the, an 满分：4 分7. How about （ ）on Sunday morning?
A. go shopB. going shopC. going shoppingD. go shopping 满分：4 分8. I like English food now. But I（ ）it a year ago.
A. didn't likedB. didn't likeC. don't likeD. doesn't like 满分：4 分9. She’s going to （ ）a meeting here this evening.
A. beB. haveC. hasD. is 满分：4 分10. （ ）this flower symbolize something happy?
A. IsB. DoC. DoesD. Are 满分：4 分11. My mom （ ）clothes now.
A. is washingB. washC. washedD. washes 满分：4 分12. Today computers（ ）a great deal in many fields.
A. are useB. useC. are usedD. used 满分：4 分13. - （ ）she doing now? -She （ ）singing.
A. Where is, isB. What is, areC. Is where, isD. What is, is 满分：4 分14. Let's go. Look,（ ）car is outside （ ）airport.
A. the,theB. the, anC. a, anD. a, the 满分：4 分15. All （ ）is a continuous supply of the basic
necessities of life.
A. what is neededB. for our needsC. the thing neededD. that is needed 满分：4 分16. Paper is made （ ）wood
A. fromB. ofC. inD. with 满分：4 分17. Ann never dreams of （ ）for her to be sent abroad
very soon.
A. there being a
chanceB. there to be a
chanceC. there be a
chanceD. being a chance
18. Did you （ ）the picnic yesterday? Yes, we（ ）it very much
A. enjoy, enjoyB. enjoyed,enjoyedC. enjoy, enjoyed
19. Could you tell me if it （ ）in winter in Australia?A. snowB. snowsC. to snow snowed
20. Do you enjoy （ ）English in our class, Miss Gao?
A. teachB. to teachC. taughtD. teaching
21. After（ ）that unforgettable love, he became more
understanding.
A. has experiencedB. experiencingC. experienced
22. Mid-Autuam Day usually （ ）in September or October
evety year.
A. comesB. is comeC. will comeD. is coming
23. As teachers we should concern ourselves with what
is said, not what we think （ ）_.
A. ought to be saidB. must sayC. have to be saidD. need to say
24. The clothes are placed in the closet according （
）their colors.
A. ofB. toC. inD. for
25. All things （ ）, the planned trip will bave to be
called off.
A. consideredB. be consideredC. consideringD. having considered

求北航1212离散数学主观题答案.
R为实数集,在R上定义二元运算证明: R关于o运算构成群.

北航语文6篇学习札记,以下选6个,不少于500字,按篇给金币
要求泛读课文1,墨子兼爱非攻 2,孟子,有为神农之言者许行 3,李贽 题孔子像于芝佛院 4蒲松龄 婴宁
5老舍 我的母亲 6 萧红 手 7 朱自清 论气节 8 巴金 爱尔克的灯光 9周作人 初恋

求奥鹏北航09秋学期《线性代数》在线作业一de答案
一、单选题（共 10 道试题,共 70 分.）V 1.设A 为mxn 矩阵,非线性方程组Ax=b ,r(A)=r则( )A.r