西南交大 大学英语5作业

西南交大 大学英语5作业
西南交大 大学英语5作业

大学英语5第1次作业

二、主观题(共1道小题)

26.Directions: For this part, you are allowed 30 minutes to write a composition on t

he topic “Money is not everything?”. You should write no less than 80 words. Money is not everything

It is well known that money is something. Nowadays, people are busy making money the neglect of other things. But my belief is that money shoud not be everything.

As we know, there are so many precious things such as time、health、true love and wisdom that we can't buy with money. That`s what we're made of, though there is no on e can tell how much do they cost. As the saying goes” An inch of gold will not buy an inch of time”.Because of this, We need to cherish something better than money.

大学英语5第2次作业

二、主观题(共1道小题)

26.Directions: For this part, you are allowed 30 minutes to write a composition on t

he topic “Smoking Is Harmful?”. You should write no less than 80 words. Smoking is Harmful

Nowadays more and more people have realized smoking can do harm to people's hea lth. However, some people still enjoy smoking. Why? Because some of them think it is a kind of fashion, some think it is of GREat fun and others, think that smoking can refres h themselves.

In fact, smoking is a bad habit. It can cause a lot of diseases. Meanwhile smoking is a waste of money. Besides, careless smokers may cause dangerous fires.

Smoking is harmful and it is not only bad for smokers themselves, but also bad for non-smokers.

Therefore, I hope all the smokers can give up smoking for themselves and also for t he people around them.

大学英语5第3次作业

二、主观题(共1道小题)

26. Directions: For this part, you are allowed 30 minutes to write a composition on t

he topic “Health and Wealth”. You should write no less than 80 words.

Health and Wealth

Health and wealth. What can be more valuable in our lives than our health? A well known proverb: "Health is Wealth"- perfectly describes the significance of health. All of u s met ill people. Did they look happy? Probably, not, since the disease did not let them r elax and feel them happy.you can be absolutely sure that these people are ready to give a ll their money away just to be healthy.

Health is wealth. Such is a simple sentence but its sense and meaning is so tremend ous and deep. Through the years, in all societies around the world, health has become sy nonymous and equivalent to the value of wealth.

大学英语5第4次作业

二、主观题(共1道小题)

26.Directions: For this part, you are allowed 30 minutes to write a composition on t

he topic “How I Spend My Spare Time”. You should write no less than 80 words. How I Spend My Spare Time

I'd like to make full use of my spare time. Usually I would do three things in my s pare time, reading, playing basketball, and serfing the Interet, which are three of my deep est passions.

Reading is one of my favorite ways to my spare time. However I don't like reading books at home. I prefer to read them in the library. We have a community library down the street. It's small but has a huge collection of books. I would go there on weekend aft ernoons checking what's new in the library and sitting in the reading room to read some of the best magazines and newspapers around the world. The warm and sweet afternoon s unshine accompanied by the smell of books,reading has certainly become one of the best ways for me to spend my spare time.

大学英语5第5次作业

二、主观题(共1道小题)

26. Directions: For this part, you are allowed 30 minutes to write a composition on the topic “Advantages and Disadvantages of the Mobile Phone”. You should write no l ess than 80 words.

Advantages and Disadvantages of the Mobile Phone

With the rapid economic development, the mobile phone has found its way into campus es and a host of students take advantage of this wonderful gadget to communicate with each other. This phenomenon gives rise to this question: What are the advantages and disadvanta ges of the mobile phone?

It is widely believed that it greatly facilitates students’ campus life. Many instances could be found to support this type of opinion. A graduating student in our university bou ght a mobile phone in the course of hunting for his job. He told me that through the mobile phone he could easily keep in touch with the employer ofthe company he intends to work with and would not miss any opportunities.

However, everything has both positive and negative facets. The mobile phone also has many disadvantages. For instance, the ringing of the mobile phone often disturbs the teacher’s teaching and othe r students’ learning.

Personally, the advantages of the mobile phone outweigh the disadvantages ofit as long as we don’t interfere with o thers while using it.

西南交大交通运输系统分析离线作业

交通运输系统分析第一次作业 三、主观题(共12道小题) 41.开放系统 答:系统与外界环境之间有物质、能量、信息交换的系统称为开放系统. 42.请举出一个系统的实例,并分析其目的、要素集、关系、结构和环境. 答:(主观题,自行举例即可) 43.系统的目标集中若出现相互矛盾的情况,应当怎样处理?请举例说明. 答:分目标之间可能是矛盾的,因此采用某种形式的折衷是必要的,即在矛盾的分目标之间寻求平衡.具体的做法是通过计算每个分目标对总目标的贡献来确定最佳的妥协. (自行举例既可) 44.切克兰德软系统方法论的步骤是什么? 答: (1)系统现状说明 通过调查分析,对现存的不良结构系统的现状进行说明. (2)弄清关联因素 初步弄清与现状有关的各种因素及其相互关系. (3)建立概念模型 在不能建立数学模型的情况下,用结构模型或语言模型来描述系统的现状.(4)改善概念模型 随着分析的不断深入和“学习”的加深,进一步用更合适的模型或方法改进上述概念模型. (5)比较 将概念模型与现状进行比较,找出符合决策者意图而且可行的改革途径或方案.(6)实施 实施所提出的改革方案. 45.交通运输系统的作业特征是什么? 答: (1)交通运输系统是一个连续过程系统; (2)交通运输系统生产的多环节、多功能、超区域的特点; (3)交通运输系统生产具有网络性特点; (4)交通运输系统是一个动态系统. 46.怎样理解交通运输系统的网络性? 答:交通运输生产不仅仅是列车、车辆在轨道、道路上移动,而且在交通运输网(包括铁路网、公路网、水运网、航空网等)上运动.良好的交通运输系统首先要有合理的布局与结构,要建设成与内部、外部协调的交通运输网.在具有科学

西南交大-大学英语3-离线作业

2013—2014学年第一学期 离线作业 科目:大学英语III 姓名:李冬军 学号: 1524582 专业:车辆工程2015-26班(专本) 西南交通大学网络教育学院 直属学习中心

大学英语III第1次作业主观题 Directions: For this part, you are allowed 30 minutes to write a composition on the topic “How to Keep Healthy”. You should write no less than 80 words. What is the most important thing in the world? I think it is health. You can take away our money, house, car, or even our clothes and we can survive. But if our health was taken away, we would surely die. That is why we always try to eat in a healthy way and exercise regularly. What's more, I think friends are an important part of one's health. Many studies show that people with a wide range of social contacts get sick less than those who don't. I always feel better when I am with friends than when I am alone. When I am with my friends, I always laugh. Laughing is also an important part of health. I like to laugh with my friends. By eating properly and exercising regularly, I can keep my body at a proper weight and keep healthy. By spending time with my friends, I can keep my mind as well as my body happy. These things sound easy to do, but not many people can manage them. I think a strong will is necessary if we want to keep healthy.

大学物理(西南交大)作业参考答案5

NO.5 电势、导体与※电介质中的静电场 (参考答案) 班级: 学号: 姓名: 成绩: 一 选择题 1.真空中一半径为R 的球面均匀带电Q ,在球心O 处有一带电量为q 的点电荷,如图所示,设无穷远处为电势零点,则在球内离球心O 距离为r 的P 点处的电势为: (A )r q 04πε; (B )(041 R Q r q +πε; (C )r Q q 04πε+; (D ))(0 41 R q Q r q -+ πε; 参考:电势叠加原理。 [ B ] 2.在带电量为-Q 的点电荷A 的静电场中,将另一 带电量为q 的点电荷B 从a 点移动到b ,a 、b 两点距离点电荷A 的距离分别为r 1和r 2,如图,则移动过程中电场力做功为: (A )(2 101 1Q --; (B )(2 101 14r r qQ -πε; (C ) )(2 1 114r r qQ --πε; (D ) ) (4120r r qQ --πε。 参考:电场力做功=势能的减小量。A=W a -W b =q(U a -U b ) 。 [ C ] 3.某电场的电力线分布情况如图所示,一负电荷从M 点移到N 点,有人根据这个图做出以下几点结论,其中哪点是正确的? (A )电场强度E M <E N ; (B )电势U M <U N ; (C )电势能W M <W N ; (D )电场力的功A >0。 [ C ] 4.一个未带电的空腔导体球壳内半径为R ,在腔内离球心距离为d (d <R )处,固定一电量为+q 的点电荷,用导线把球壳接地后,再把地线撤去,选无穷远处为电势零点,则球心O 处的点势为: (A )0; (B )d q 4πε; (C )-R q 04πε; (D ))(1 1 40 R d q - πε。 参考:如图,先用高斯定理可知导体内表面电荷为-q ,外表面无电荷(可分析)。虽然内表面电荷分布不均,但到O 点的距离相同,故由电势叠加原理可得。 [ D ] ※5.在半径为R 的球的介质球心处有电荷+Q ,在球面上均匀分布电荷-Q ,则在球内外处的电势分别为: (A )内r Q πε4+,外r Q 04πε-; (B )内r Q πε4+,0; 参考:电势叠加原理。注:原题中ε为ε0 (C )R Q r Q πεπε44-+内 ,0; (D )0,0 。 [ C ] r 2 (-Q)A b r 1 B a (q )

大学英语II第三次作业(西南交大)

一、单项选择题(只有一个选项正确,共40道小题) 1. –What time is it? –____________________. (A) My watch keeps good time (B) My watch is five minutes fast (C) My watch says three o’clock (D) I say three o’clock 正确答案:C 解答参考:[第三单元] 本题问句是“现在几点钟”,C项“我的表是三点钟”。A项“我的表走时准确”,B项“我的表快五分钟”,D项“我说是三点钟”都不符合习惯表达法。 2. –Could you tell me the time, please? –____________________. (A) Yes, I can (B) No, I can’t (C) It’s four thirty (D) It’s Friday 正确答案:C 解答参考:[第三单元]C 本题仍是问时间,回答应该直接告诉对方时间,故C项正确。 3. –What day is tomorrow? –Today is Tuesday. So it’s________. (A) Monday (B) Wednesday (C) Thursday (D) Saturday 正确答案:B 解答参考:[第三单元]B 本题问“明天是星期几”,回答“今天是星期二,所以明天是星期三”。 4. –When is your birthday? –____________________. (A) It’s April 18th (B) It’s Sunday (C) It’s August

房屋建筑学(西南交大)离线作业

21.墙体设计要求有哪些? 22.提高墙体的热阻的措施有哪些 23.墙体的隔热措施有哪些 24.实体砖墙的组砌方式主要有哪几种 25.普通粘土砖墙的砖模尺寸与建筑模数是否一致?如何协调二者关系 26.勒脚的作用是什么?常用的做法有哪几种 27.墙身防潮层的作用是什么?水平防潮层的位置如何确定?什么请款下须设垂直发防潮层 28.墙身防潮层的作用是什么?水平防潮层的位置如何确定?什么请款下须设垂直发防潮层

29.窗洞口上部过梁的常用做法有哪几种,各自的适用范围如何 30.砖砌平拱过梁的构造要点是什么 31.圈梁的作用有哪些?设置原则主要有哪些 32.构造柱的作用及加设原则是什么? 33.构造柱的构造要点有哪些 ? 34.简述墙体三种变形缝的异同 35.简述 1/2 砖隔墙构造要点。 36.简述加气混凝土砌块隔墙构造要点 37.墙面装修的作用是什么 ? 38.什么是抹灰类墙面装修?有哪些构造层次?简单介绍各构造层次的作用与做法

39.什么是贴面类装修?常见贴面类装修有哪些? 40.什么是涂料类墙面装修?涂料施涂方法有哪些? 17.楼梯的作用及设计要求有哪些 18.楼梯主要由哪些部分组成?各部分的作用和要求是什么? 19.楼梯坡度的表达方式有那些? 20.当楼梯底层中间平台下做通道而平台净高不满足要求时,常采取哪些办法解决? 21.现浇钢筋混凝土楼梯有哪几种结构形式?各有何特点 22.预制踏步有哪几种断面形式和支承方式?

23.栏杆扶手在平行楼梯的平台转弯处如何处理? 24.室外台阶的构造要求是什么?通常有哪些做法。 25.电梯井道的构造要求有哪些? 26.简述楼梯的设计步骤。 27.< 影响基础埋置深度的因素有哪些? 28.基础按构造形式不同分为哪几种?各自的适用范围如何? 29.确定地下室防潮或防水的依据是什么? 30.地下室卷材外防水的层数是如何确定的? 21. 现浇钢筋混凝土楼板的特点和适用范围是什么

西南交大大学英语2第3次作业

本次作业是本门课程本学期的第3次作业,注释如下:大学英语II 第3单元作业题 一、单项选择题(只有一个选项正确,共40道小题) 1. –What time is it? –____________________. (A) My watch keeps good time (B) My watch is five minutes fast (C) My watch says three o’clock (D) I say three o’clock 你选择的答案: [前面作业中已经做正确] [正确] 正确答案:C 解答参考:[第三单元] 本题问句是“现在几点钟”,C项“我的表是三点钟”。A项“我的表走时准确”,B项“我的表快五分钟”,D项“我说是三点钟”都不符合习惯表达法。 2. –Could you tell me the time, please? –____________________. (A) Yes, I can (B) No, I can’t (C) It’s four thirty (D) It’s Friday 你选择的答案: [前面作业中已经做正确] [正确] 正确答案:C 解答参考:[第三单元]C 本题仍是问时间,回答应该直接告诉对方时间,故C项正确。 3. –What day is tomorrow? –Today is Tuesday. So it’s________. (A) Monday (B) Wednesday (C) Thursday (D) Saturday 正确答案:B 解答参考:[第三单元]B 本题问“明天是星期几”,回答“今天是星期二,所以明天是星期三”。 4. –When is your birthday? –____________________. (A) It’s April 18th (B) It’s Sunday (C) It’s August (D) I was born in 1988

西南交大-大学英语II-第1-5次作业

2015—2016第二学期 离线作业 科目:大学英语II 姓名:金宇 学号: 专业:铁道工程技术 2015-48班(高专) \ 西南交通大学远程与继续教育学院 直属学习中心

Directions: For this part, you are allowed 30 minutes to writ e a composition on the topic “My Favorite Sport”. You shou ld write no less than 80 words. I like doingsports very much, such as running, skating, swimmin g and so on.But playing basketball is my favorite . Playing basketball can make me stronger and stronger. And keepi ng playing it can make my basketball skills better. Playing basketb all is not only very interesting but also helps me make many friend s . I don't forget when I was very young my father sent me a basketb all as my bithday gift and he taught me how to play it. From then o n I loved playing basktball very much. I also enjoy watching NB A games on TV and Kobe Bryant is my favorite baskteball playe r. I hope I can have a chance to see an NBA game in person . I wi sh I can play basketball with Kobe Bryant one day .

西南交大网教大学英语IV离线作业全答案

《大学英语IV》第1次作业 ***(学号:********) 41. Directions: For this part, you are allowed thirty minutes to write a composition on the topic “My I deal Job”. You should write no less than 100 words. My ideal job is to be able to work this morning, 9:00, 5:00 pm from work, there is a bright and spa cious office, there is a beautiful female secretary, wages 20,000 yuan, from time to time and then s ent some incentive shuttle bus to and from workthe weekend to rest without overtime, and can be paid leave, five insurance payments, on the whole, God, I'm not dreaming. 《大学英语IV》第2次作业 ***(学号:********) 41. Directions: For this part, you are allowed thirty minutes to write a composition on the topic “My Favorite Means of Getting Information”. You should write no less than 100 words. My favorite means of access to information on the network, the network information very broad c overage, has a collection of all walks of life, the search method is very simple, with a computer ca n sit at home, do not have to run between the Library. But the search also requires skill, such as ke ywords, search keywords is incorrect, it will affect the search results. 《大学英语IV》第3次作业 ***(学号:********) 41. Directions: For this part, you are allowed thirty minutes to write a composition on the topic “H ealth and Wealth”. You should write no less than 100 words, and base your composition on the o utline given below. 1) 有人认为健康重要,而有人认为财富重要; 2) 你的观点。 If you have a day in front of the health and wealth of trade-offs, I would not hesitate to choose hea lthy, alive in my mind is the greatest wealth, only to have a strong physique, we are better able to e njoy, if webody as a whole by the disease plagued, even if there is no amount of money, what with

第一学期西南交大理论力学C第1次作业答案

本次作业是本门课程本学期的第1次作业,注释如下: 一、单项选择题(只有一个选项正确,共26道小题) 1. 考虑力对物体作用的运动效应和变形效应,力是。 (A) 滑动矢量 (B) 自由矢量 (C) 定位矢量 正确答案:C 解答参考: 2. 考虑力对物体作用的运动效应,力是。 (A) 滑动矢量 (B) 自由矢量 (C) 定位矢量 正确答案:A 解答参考: 3. 图示中的两个力,则刚体处于。 (A) 平衡 (B) 不平衡 (C) 不能确定 你选择的答案:[前面作业中已经做正确] [正确] 正确答案:B 解答参考: 4.

作用力的大小等于100N,则其反作用力的大小为。 (A) (B) (C) 不能确定 你选择的答案:[前面作业中已经做正确] [正确] 正确答案:B 解答参考: 5. 力的可传性原理只适用于。 (A) 刚体 (B) 变形体 (C) 刚体和变形体 你选择的答案:[前面作业中已经做正确] [正确] 正确答案:A 解答参考: 6. 图示结构,各杆自重不计,则杆BC是。

(A) 二力杆 (B) 不能确定 你选择的答案:[前面作业中已经做正确] [正确] 正确答案:A 解答参考: 7. 图示作用于三角架的杆AB中点处的铅垂力如果沿其作用线移动到杆BC的中点,那么A、C处支座的约束力的方向。 (A) 不改变 (B) 改变 (C) 不能确定 你选择的答案:[前面作业中已经做正确] [正确] 正确答案:B 解答参考: 8.

图示构架ABC中,力作用在销钉C上,则销钉C对杆AC的作用力与销钉C对杆B C的作用力。 (A) 等值、反向、共线 (B) 分别沿AC和BC (C) 不能确定 你选择的答案:[前面作业中已经做正确] [正确] 正确答案:B 解答参考: 9. 如图所示,物体处于平衡,,自重不计,接触处是光滑的,图中所画受力图。 (A) 正确 (B) 不正确

西南交大大学英语I-第4次作业题答案

本次作业是本门课程本学期的第4次作业,注释如下:大学英语I 第5单元作业题 一、单项选择题(只有一个选项正确,共40道小题) 1. –What do you think I should do? – _________________ (A) I don’t know. (B) That’s not my business. (C) You must talk with him. (D) You’d better talk with him. 你选择的答案: D [正确] 正确答案:D 解答参考:[第五单元]D 当对方问你建议时,你应该委婉地提出自己的看法。你可以表示You’d better … 而不是粗暴地拒绝或是说你“必须”如何 2. –What about going shopping together? – _________________ (A) It sounds good. (B) I prefer go alone. (C) I am occupied. (D) I have no time. 你选择的答案: A [正确] 正确答案:A 解答参考:[第五单元] A 当对方建议一起做某事,你不能参与,可以先表示歉意。你能够参与,可以说 It sounds good 说明你很感兴趣 3. –If you were in my position, what would you do? – _________________ (A) Hi! It’s you problem. (B) I weren’t you. (C) If I were you, I would give up. (D) I don’t know. 你选择的答案: C [正确] 正确答案:C 解答参考:[第五单元]C 当对方问“要是你是我,你会怎么办?”的时候,如果你有建议,则可以说 If I were you, I would… 如果你也不知如何是好,则可以说Sorry, I don’t know 4. –I can’t sleep well recently. – _________________ (A) Me, too. (B) You work too hard. (C) Why don’t you talk to your doctor? (D) Why bother? 你选择的答案: C [正确]

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My ideal job My ideal job is to be able to work this morning, 9:00, 5:00 pm from work, there is a bright and spacious office, there is a beautiful female secretary, wages 20,000 yuan, from time to time and then sent some incentive shuttle bus to and from workthe weekend to rest without overtime, and can be paid leave, five insurance payments, on the whole, God, I'm not dreaming. 大学英语IV第2次作业 41.Directions: For this part, you are allowed thirty minutes to write a composition on the topic “My Favorite Means of Getting Information”. You should write no less than 100 words. My Favorite Means of Getting Information My favorite means of access to information on the network, the network information very broad coverage, has a collection of all walks of life, the search method is very simple, with a computer can sit at home, do not have to run between the Library. But the search also requires skill, such as keywords, search keywords is incorrect, it will affect the search results. 大学英语IV第3次作业 41.Directions: For this part, you are allowed thirty minutes to write a composition on the topic “Health and Wealth”. You should write no less than 100 words, and base your composition on the outline given below. 1) 有人认为健康重要,而有人认为财富重要; 2) 你的观点。 Health and Wealth If you have a day in front of the health and wealth of trade-offs, I would not hesitate to choose healthy, alive in my mind is the greatest wealth, only to have a strong

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