11, Dose criticism do more harm than good to people?
A:what do you think of the topic,does criticism do more harm than good to people?
B:oh,I just want to talk about something that are very close to this topic,which made me very sad.
A:was there something bad that happened to you?
B:yes,a friend of mine criticised me in front of my classmates,it made me very sad.At that time I just could not believe that he was one of my best friends.
A:so,you think that being criticised by someone in front of your classmates made you feel embarrassed and brought shame on you,and so you were very angry?
B:yes,I think so,how could he do that.
A:but I don’t think it’s right that you only feel angry from it.A true friend of yours will be strict to you,so look back and think about what he said to you on that day,if he did that for your own good,you should not only feel angry.
B:I am his friend,he can give me an advise,or talk about with me.I could not accept being criticized in front of people.
A:but in my opinion,being strict to you is what a true friend should do.if you do something wrong,your friend should say something to you.but obviously it was not right to do this in front of your classmates.he should take a right way to do this,or it will probably bring you harm.
B:en,mabe you are right.thank you.I will think about this carefully.
12,What’s your opinion about “naked marriage”? Will you follow the trend?
A:there is a hot topic today about “naked marriage”,have you heared that?
B:yes,lots of people talk about that and I don’t know what it’s meaning,can you explain it to me.
A:okay,”naked marriage”just means a marriage without a house and a car for the couple.
B:a marriage without a house?will the girl accept it?I don’t think they will be happy
without a house .
A:is this your opinion?why do you say that?
B:if people around you all have their own house,and you can only rent a house for living,will you be happy?at least in China people think they have a home only when they have a house.what is your opinion?can you receive it?
A:oh,I don’t think so.I think the tradition should change.As young people don’t have enough money for a house,but it’s time for a marriage,how can they do ?In addition,love is the foundation of a happy family,only love will make people feel happy.
B:I think that if the couple work hard,they will have enough money for a house.
A:but the price of a house is higher and higher,most of young people still could not afford it.
B:but their parents,especially the girl’s,will prevent it if the boy don’t have a house,the girl must think of her parents’ feeling.
A:so,it’s not a easy topic,there will never be a standar answer.
B:yes,it’s really complex.
13.What’s your opinion about “flash marriage”? Will you follow the trend?
A:there is a hot topic today about “flash marriage”,have you heared that?
B:yes,lots of people talk about that and I don’t know what it’s meaning,can you
explain it to me.
A:okay,”flash marriage”just means a marriage without getting along with each other through a long time .
B:a marriage without getting along with each other through a long time ?will they accept it?I don’t think it’s okay when they don’t know each other well .
A:is this your opinion?why do you say that?
B:if you don’t get along with each other during a long time,can you make sure that you know each other well?so I don’t think it’s okay when they get along with each other just few days or weeks .what is your opinion?can you receive it?
A:oh,I think so.I think the tradition should change.As young people have their own mind they know what they do .In addition,love is the foundation of a happy family,if they love each other deeply ,they will feel happy.
A:so,it’s not a easy topic,there will never be a standar answer.
B:yes,it’s really complex.
14.A large company or a small one, which do you want to work for?
A:what do you think of the topic,which will you work for,a large one or a small one?
B:oh,I think the large one is better,because it has advanced technology,you can learn more.
A:but you will feel under greater pressure when you are in a large company.
B:and it give you more advantange when you resign from the company to enter another one. A:that’s true.but in a large company job division has become more and more specialized and we can
only be experts in one aspect.if you don’t want to stay in the company ,it’s difficult for you to enter other company.
B:yes,you’re right,it’s true.so you will enter a small one?have you thougt it’s advantage and disanvantage?if you enter a small company,you can’t learn advanced technology,it’s difficult when you want to enter other companies
A:yes,but in a small company you can learn more kinds of work,you will have a more comprehensive ability,and it’s very important for you.
B:so it’s not easy to deside which one is better.
15. What do you think are the advantages and disadvantages of Changsha city?
A:what do you think of Changsha city,can you give some examples of it’s advantage and disadvantages?
B:oh,I love the food in Changsha,there are so many kinds of food here and they are delicious.what’s your opinion?
A:there are so many beautiful girls here.
B:that’s true.changsha’s environment is okay,it’s beautiful.
A:the house price here is very low,it’s very important for young people to stay here.
B:yes,and there are a lot of work opportunity for people.
A:so,Changsha is a very good city for people to have a life here.but is there anything you don’t like here?
B:compared wich my hometown,I don’t feel comfortable when in summer and winter here in Changsha,when it’s summer,it’s so hot,and in winter it’s so cold.
A:yes,that’s true.but Changsha is a very good city overall.
16.What famous entertainer or athlete would you like to meet, and why?
A:who’s your famous entertainer or athlete?
B:I like Michael Jackson best,I think he is so brillint,his music is touching.
A:I think so.when did you start to listen to his music?
B:when I was in high school,I started to listen to his music,I think he put his emotion into his music,so when I listen to his music I have a very special feeling.he was famous when he was a child,so he is so skillful in music.what’s yours?
A:the athlete Armstrong is my favourite one.he is a very inspirational person.
B:can you tell me some of his story?
A:okay,his parents divorced when he was young,but he didn’t fall,he trained hard and got some champion and money https://www.doczj.com/doc/6113678573.html,ter,he took part in Tour de France ,and got 7 championship.during his caree he was diagnosed with cancer,but he recoveried with his strive.
17.What do you appreciate most in a friend?
A:as the topic says, what do you appreciate most in a friend?
B:I think being sincere is most precious between friends.if friends get along with each other like people in society,and don’t tell trueth to each other,there is no pleasure to be friends.they will be like actors.think about that,if we are good friends,but we are not sincere to each other ,will we be friends.what’s your opinion?
A:I think being loyal to each other is most precious between friends.if someone is not loyal to his friends ,then they can not trust each other,then there is no foundation to be friends.they will be strangers.it is not necessary to be friend.
18.What change do you want to make in Central South University?
A:just as the topic says,what change do you want to make in Central South University?
B:I think the school should organized more activities outdoor,then students will be familiar to each other.
A:that’s true.I think the door of main campus is not large enough,it should be larger and more beautiful.
B:I think the food in our dinning room should change over time,it will make me feel sick in the stomach when the food is always the same.
A:as the temperature in Hunan is not suitable to people in winter and summer,so I think the school should install air conditioner for us.
19.Can borrowing money from a friend harm the friendship?
A:what do you think about the topic?
B:in my opinion, I don’t think borrowing money from a friend will harm the friendship. Because they are friends,if one of them have difficulties,the other one should give him a hand.or they should not be friends.
A:I don’t think so.if one day he does not take enough money and the other one want to borrow money from him,then the man will have a thought that he does not want borrow me money.then it will harm friendship.this is only one example,there are a lot of things in our life caused by borrowing money that will harm friend.
B:just like the example you said,if they are true friends,then they will tell each other the truth,then the problem will be solved.but there are thing exceptional like what you said that will harm friendship.that’s really a complex thing.
A:yes,it’s hard to say which one is right.
20.Live in small town or in a big city?
A:what do you think of the topic, will you live in a large city or a small one?
B:oh,I think the large one is better,because it has advanced public service,you can can be more comfortable.
A:but you will feel under greater pressure when you are in a large city.
B:and it give you more advantange when you resign from the company to enter another one in a small city.
A:that’s true.but in a large city,we will use more money for our living,especially,the house price is so high that we young people could not afford for one.
B:yes,you’re right,it’s true.so you will live in a small one?have you thougt it’s advantage and disanvantage?if you live in a small city,you can’t learn advanced technology,it’s difficult to have so much more public service and welfare,and the chance for excellent job.
A:yes,but in a small city,you can offord for a house,and it’s very important for us.
B:so it’s not easy to decide which one is better.
中南大学考试试卷 2009级（大学物理1、2）考试试卷 一选择题 1.（本题3分）一质点在力的作用下作直线运动，力F=23x，式中F以牛顿、x以米计。则质点 1 x=1m运动到2x=2m的过程中，该力做功为（）A 3J B 7J C 21J D 42J 2.(本题3分）两个相同的容器，一个盛氢气，一个盛氦气（均视为刚性分子理想气体），开始时它们的压强和温度都相等，现将6J热量传给氦气，使之升高一定温度。若使氢气也升高同样温度，则应向氢气传递热量（） A 12J B 10J C 6J D 5J 3.(本题3分）一容器贮有理想气体，其分子平均自由程为—λ0，若气体的热力学温度降到原来的一半，但体积不变，分子作用球半径不变，则此时平均自由程为（） A -λ0 2 B —λ0 C 2/0—λ D —λ0/2 4.(本题3分）在波长为λ的驻波中，两个相邻波腹之间的距离为（）Ａλ／４Ｂλ／２Ｃ３λ／４Ｄλ 5.(本题３分）一弹簧振子做简谐运动，总能量为E 1 ,如果简谐振动振幅增加为原来的两倍，重物的质量增为原来的四 倍，则它的能量E 2变为（）ＡE 1 ／４ＢE 1 ／２Ｃ ２E 1Ｄ４E 1 6.(本题３分）一束波长为λ的单色光由空气垂直入射到折射
率为ｎ的透明薄膜上，透明薄膜放在空气中，要使反射光得到加强，则薄膜的最小厚度为（ ）Ａλ／４ Ｂλ／４ｎ Ｃ λ／２ Ｄ λ／２ｎ 7.（本题３分）一高速运动电子的总能量为其静能的ｋ倍，则电子的速度为（ ）Ａｋｃ Ｂk c Ｃ2k 1k c - Ｄ 1k k c 2- 8.（本题３分）一束光强为I 0的自然光－垂直穿过两个偏振 片，且此两偏振片的偏振化方向成o 45角，则穿过两个偏振片后的光强I 为（ ）Ａ24 /0I ＢI 0／４ ＣI 0／２ Ｄ 2/20I 二 填空题（共２８分） １．（本题４分）１ｍｏｌ理想气体经过等温膨胀，体积由V 0变到２V 0 ，则气体的熵变为＿＿＿． ２．（本题４分）一列车以２０ｍ／ｓ的速度离车站而去，已知声速为３４０ｍ／ｓ，如果汽笛的频率为５００Ｈｚ，那么站在车站上的旅客听到的汽笛频率为＿＿Ｈｚ。 ３．（本题４分）如图：一长为L 的均匀细杆ＯＭ可绕Ｏ轴在竖直平面内自由转动，今将ＯＭ置于水平位置，然后令其从静止开始自由摆下，当细杆转到竖直位置时，其转动角速度为＿＿。 ４．（本题４分）设 (v f 为速率分布函数，则dv v v Nf v ?21)(的物 理意义为＿＿．
中南大学《英语(下)》在线考试答案 一. 未知题型（共34题,共70分） 1. Being alone in outer space can be frightening. That is one reason why astronauts on solo (单独的) space flights were given plenty of work to keep them (1). They were also in constant communication with people on the earth. (2), being with people from whom you cannot get away might be even harder than being alone. This is what happens on long submarine (潜水艇) voyages. It will also happen on (3) space flights in the future. Will there be special problems of adjustment under such conditions? Some scientists have studied the reactions of men to one another during long submarine voyages. They have found that the longer the voyage lasts, the more serious the problem of (4) is. When men are (5) together for a long period, they begin to feel uneasy. Everyone has little habits of speaking and behaving that are ordinarily acceptable. In the limited space over a long period of time, however, these little habits may become very (6). Apparently, although no one wants to be (7) all the time, everyone needs some degree of privacy. When people are enclosed together, they are in what is called a stress situation. That means that they are under an unusual amount of (8) or stress. People who are well-adjusted are able to (9) stress situations better than others. That is one reason why so much care is taken in (10) our astronauts. These men undergo a long period of testing and training. One of the things tested is their behavior under stress. （20 分） (1) 1 （2分） A.tired B.asleep C.conscious D.busy ★标准答案： D (2) 2 （2分） A.So far B.after all C.However D.Therefore ★标准答案： C (3) 3 （2分） A.long B.fast C.dangerous D.direct ★标准答案： A
练习册答案
练习一 1．j i 6+，j i 26+，j 24 2．3/2)2/3(k s ，2/121-kt ，2/303 2 kt x x += 3．[2] 4．[3] 5．（1）由???-==2 2192t y t x 得)0(21192 ≥-=x x y ，此乃轨道方程 （2）j i r 1142+=，j i r 1721+=，∴j i v 62-=，s m v /33.6= （3）i t i dt r d v 42-==，j dt v d a 4-== ∴ s t 2=时，j i v 82-=，j a 4-= （4）由v r ⊥，有0=?v r ∴? ??==?=--s t t t t t 300)219(442或 当0=t 时???==190y x 当s t 3=时? ??==16 y x 6．（1）a dt dv = 2/1kv dt dv -=∴ 有 ? ? -=-?-= -v v t kt v v kdt dv v 2 /10 2/12 /122 当0=v 时，有k v t 02= （2）由（1）有2 021??? ? ? -=kt v v k v kt v k vdt x t k v 3221322 /30 00 /2300=? ? ? ??--==?? 练习二 1． 2 220 2t g v t g +， 2 220 0t g v g v + 2．2/8.4s m 2/4.230s m r a d 15.3 3．[2] 4．[3]
5．由约束方程 222h x l += 有：dt dx x dt dl l 22= 即：xv lv 220=-……（1） ∴02 20v x x h v x l v +- =-= 对（1）两边求导，有： dt dv x dt dx v dt dl v +=-0 203222 0v x h x v v dt dv a -=-==∴ 6．（1）s rad R v /25==ω （2）22/8.392s rad ==θωβ （3）s t 628.02==ω θ 练习三 1．k g m 222 2．J 882 3．[1] 4．[4] 5．（1）2 202 08 321221mv mv v m E W k f -=-??? ??=?= （2）r mg W f πμ2?-= rg v πμ163 2 =∴ （3）3 4 ) 2 1 0(2 0= ?-=k E mv N （圈） 6．先用隔离体法画出物体的受力图 建立坐标，根据ma F =的分量式 x x ma f =∑ y y ma f =∑有 x ma f F =-μθcos 0sin =-+Mg F N θ 依题意有0≥x a ，N f μμ= θμθμsin cos +≥ Mg F 令 0)sin (cos =+θμθθ d d ?=∴21.8 θ 4.36≥F
中南大学考试试卷 2011 -- 2012学年下学期时间110分钟(2012.5.6) 物理化学课程32学时2学分考试形式：闭卷 专业年级：化工、应化、制药、粉体、材化等2010级 总分100分，占总评成绩70 % 注：此页不作答题纸，请将答案写在答题纸上 一、单选题（每题2分，共26分） 1. 实验测得某二级反应速率常数，正确的是（） （A）k=5.0s-1（B）k=5.0 dm6·s-1·mol-2（C）k=5.0 s-1·mol-1（D）k=5.0 dm3·s-1·mol-1 2. 加催化剂可使化学反应的下列物理量中哪个改变（） （A）反应热(B) 平衡常数(C) 反应熵变(D) 速率常数 3. 对下列电解质溶液，其中摩尔电导率最大的是（） (A) 0.001 mol·kg-1 KCl (B) 0.001 mol·kg-1 KOH (C) 0.001 mol·kg-1 HCl (D) 0.1 mol·kg-1 KCl 4. 浓度为0.1mol·kg-1的MgCl2水溶液，其离子强度为( ) (A) 0.1mol·kg－1(B) 0.15mol·kg-1(C) 0.2mol·kg－1，(D) 0.3mol·kg-1。 5. 对下列电解质溶液，其中平均活度系数最大的是（） （A）0.01 mol·kg-1KCl （B）0.01 mol·kg-1CaCl2（C）0.01 mol·kg-1LaCl3（D）0.001 mol·kg-1KCl 6. 用补偿法测定可逆电池的电动势时，是为了( ) (A) 消除电极上的副反应；(B) 减小标准电池的损耗； (C) 在可逆情况下测定电池的电动势；(D) 简便易行。 7. 恒温恒压下可逆电池放电过程（）
中南大学 《英语（下）》在线考试答案 1. Fifty million public school children in America (1) a new school year. The number (1) 1 are starting (2) 2 weak (3) 3 higher (4) 4 on (5) 5 pay (6) 6 property (7) 7 says (8) 8 per (9) 9 receiving (10) 10 many 2. Let go love There was once a lonely girl who longed so much for love. One day (1) 1 starving (2) 2 cage (3) 3 strong (4) 4 open (5) 5 that (6) 6 flew (7) 7 horror (8) 8 .for (9) 9 softly (10) 10 keep 3. In America schools there is something called Home-coming Day. Many high schools (1) graduation (2) Many weeks before the day (3) To go home to see their family (4) elect or choose (5) The student who is liked most by the others. 4. Full-time university students spend all their time studying. They don’t do other (1) Medical students (2) when they graduate (3) live in a universit (4) work for a living in the daytime and study in the evening (5) whose students send their work by post to their tutor 5. he sent you to a hospital, but all the advanced equipment there shows that there (1) arrange by turns (2) .When you are in a state of subhealth, you should find out the reasons and relax yourself. (3) they have more pressure in life and work (4) keep relaxed (5) we should have meals with less salt and sugar
\练习一 1．j i 6+，j i 26+，j 24 2．3/2)2/3(k s ，2/121-kt ，2/303 2 kt x x += 3．[2] 4．[3] 5．（1）由???-==2 2192t y t x 得)0(21192 ≥-=x x y ，此乃轨道方程 （2）j i r 1142+=，j i r 1721+=，∴j i v 62-=，s m v /33.6= （3）i t i dt r d v 42-==，j dt v d a 4-== ∴s t 2=时，j i v 82-=，j a 4-= （4）由v r ⊥，有0=?v r ∴? ??==?=--s t t t t t 300)219(442或 当0=t 时???==190y x 当s t 3=时? ??==16 y x 6．（1）a dt dv = 2/1kv dt dv -=∴ 有 ? ?-=-?-= -v v t kt v v kdt dv v 2 /10 2 /12 /122 当0=v 时，有k v t 02= （2）由（1）有2 021??? ? ? -=kt v v k v kt v k vdt x t k v 3221322 /30 00 /2300=? ? ? ??--==?? 练习二 1． 2 220 2t g v t g +， 2 220 0t g v g v + 2．2/8.4s m 2/4.230s m r a d 15.3
3．[2] 4．[3] 5．由约束方程 222h x l += 有：dt dx x dt dl l 22= 即：xv lv 220=-……（1） ∴02 20v x x h v x l v +- =-= 对（1）两边求导，有： dt dv x dt dx v dt dl v +=-0 203222 0v x h x v v dt dv a -=-==∴ 6．（1）s rad R v /25==ω （2）22/8.392s rad ==θωβ （3）s t 628.02==ω θ 练习三 1．k g m 222 2．J 882 3．[1] 4．[4] 5．（1）2 202 08 321221mv mv v m E W k f -=-??? ??=?= （2）r mg W f πμ2?-= rg v πμ163 2 =∴ （3）3 4 ) 2 1 0(2 0= ?-=k E mv N （圈） 6．先用隔离体法画出物体的受力图 建立坐标，根据ma F =的分量式 x x ma f =∑ y y ma f =∑有 x ma f F =-μθcos 0sin =-+Mg F N θ 依题意有0≥x a ，N f μμ= θμθμsin cos +≥ Mg F 令 0)sin (cos =+θμθθ d d ?=∴21.8 θ 4.36≥F
Problem 1. Answers: 1. 216v i j =+ ; 8a j = ; 7.13?.(cos a v av θ?= ) 2. 1/3(3/)f t v k = 3. a-e, b-d, c-f. 4. [d]: 222x y L +=, 0dx dy x y dt dt += dx v dt =, B dy v dt =, 0B xv yv +=, cot B x v v v y θ== 5. (a)32(102)3 t r i t t j =+- , (Answer) (b) 912r i j =+ , (3)(0)343 avg r r v i j -= =+ , (Answer) (3)(0)343 avg v v a i j -==- (Answer) (c) 92v i j =- 2tan 9 y x v v θ==-, 12.5θ=- (Answer) 6. Solution: From the definition of acceleration for a straight line motion dv a dt =, and the given condition a =- dv dt -= . Apply chain rule to d v /d t , the equation can be rewritten as d v d x d v v d x d t d x -= = Separating the variables gives v k d x =- Take definite integration for both sides of the equation with initial conditions, we have x v d v k d x =-? ?, or 3/2 023x v k = (Answer)
1.What should we do to protect ourselves if an earthquake happened? A:Today let us talk something about earthquake. B:It is a sorrowful topic.It brings me to remember the Wechuan earthquake. A:Yeah,but after one year of their hardworking,I believe they can face it bravely. B:I cannot agree with you any more. A:So when the earthquake happens,what should you do? B: I think that I might hide under the table. A:Oh,no.It is a wrong way,you’d better be well advised not to do it. B:Can you tell me what the right way is. A:When the earthquake happens ,if it is available ,you’d better run to the vacancy area;if not,you should keep the height lower than table or bed and stay next to them. B:In addition,if we are in public places,we should be on the drop,protect our head and not run to the exports together. A:Yes,only this can we reduce the rate of casualties and protect ourselves when an earthquake happens. B:Today’s conversation make me know how to protect ourselves when an earthquake occur. 2.Make up a conversation between a driver and policeman. A:Sir,may I please see your license and registration?Do you know how fast you were going? B:No,I am not sure.I think about 65kilometers per hour,right? A:You are not sure?You are going at 90kilometers per hour.That is 25 kilometers per hour over the legal speed limit.Have you been drunk? B:No,officer,not at all. A:Then how can you explain your behavior?. B:Well,I guess I just was not paying attention to the speed meter. A:Not paying attention to the speed meters,why not? B:Um,because I was busy talking to my friend. A:On a cellphone. B:Yes, I was using a cellphone.I just bought it,so I decided to give my friend a phone call to tell him about it.While I did that I also turned on the radio and was listening to one of my favourite songs,and eating some food I had bought at a fast food restaurant,and,um,guess I had too many distractions. B:That is definitely true,I am going to have given you a ticket,please
统计学专业本科培养方案 一、专业简介 统计学是关于数据的方法论学科，提供数据采集、数据处理、数据分析的各种方法，统计学专业就是培养掌握采集、处理、分析数据的理论和技能的专门人才，我校统计学专业自2000年开始招收本科生。雄厚的概率论和数理统计学科的教学资源是我们的办学优势，培养学生具有扎实的数理统计基础和过硬的解决实际问题能力是我们的办学特色。 二、培养目标 培养适应社会主义市场经济需要、具有良好的数学和经济学素养、掌握现代统计学的基本理论与基本方法、能够熟练地运用计算机分析和处理数据信息的高级复合型专门人才。学生毕业后可在工商企业、金融投资业和政府部门从事统计调查、信息管理、数据分析、风险评价等应用和研究工作，或在相关领域从事教学科研工作。 本专业学生可在商务统计、金融统计和数据分析等方向自主选择专业出口，本专业毕业生除可继续攻读统计学研究生学位外，还特别适合选择攻读数学、生物、金融、经济管理、信息类研究生学位。 三、培养要求 要求本专业学生着重掌握统计学和经济学基础理论与基本方法，此外，还要求对统计学相关学科也要有足够的了解。使其既具有扎实全面的统计学理论知识，又具有运用统计方法去分析、解决实际问题的能力。本专业毕业生应具备以下几方面的能力： 1．具有扎实的数学基础，受到比较严格的数学训练。 2．掌握统计学的基本理论、基本方法和计算机应用技能，具有采集、处理和分析数据的能力。 3．掌握社会、经济、金融等方面的相关知识，具有运用统计学理论和方法解决实际问题的能力。 4．掌握几种主要的数学软件以及统计分析软件，具有较强的统计计算能力； 5．掌握一门外语，具有较强的听、说、读、写、译能力。 四、主干课程和特色课程
中南大学考试试卷 2009 2010 学年二学期时间100分钟 物理化学（下）课程32学时2学分考试形式：闭卷 专业年级：粉体、材化、应化、化工、制药、无机、矿物08级总分100 分，占总评成绩 70 % 注：此页不作答题纸，请将答案写在答题纸上 一、单选题（每题2分，共20分） 1. 反应 2A — B + C 由多个基元反应所构成，且速率方程具有幂函数形式。对该反应，下列说法中正确的是（） （A）单分子反应（B）双分子反应（C）二级反应（D）n级反应 2. 两个一级平行反应：⑴和⑵，已知反应⑴的活化能E1大于反应⑵的活化能E2，以下哪一种措施不能改变获得B 和C的比例？（） （A）提高反应温度（B）延长反应时间（C）加入适当的催化剂（D）降低反应温度3. 下列针对催化反应的描述，不正确的是( ) （A）催化剂能改变反应的途径（B）催化剂能改变反应的速率
（C）催化剂能改变反应的理论产率（D）反应后催化剂的量不会改变 4. 在298K下，含有下列离子的无限稀释的溶液中，离子摩尔电导率最大的是（） （A）3+（B）2+（C）（D）5. 在下列因素中，与电解质溶液中离子淌度无关的是（） （A）压强（B）温度（C）电场强度（D）溶液浓度 6. 与参与电极反应某组分活度无关的是（） （A）电极电势（B）标准电极电势（C）液接电势（D）超电势 7. 下列与极化现象无关的物理量是（） （A）分解电压（B）理论分解电压（C）析出电势（D）极限扩散电流 8. 一般不会产生吸附现象的界面是（） （A）固-液界面（B）固-气界面（C）固-固界面（D）液-气界面
9. 胶体的(丁铎尔）效应产生原因是（） （A）光折射（B）光散射（C）光吸收（D）光激发 10.溶胶的电学性质是由于胶粒带电所致，下列现象中不属于溶胶电学性质的是（） （A）布朗运动（B）电泳（C）电渗（D）沉降电势 二、填空题（每题2分，共20分） 1. 强电解质溶液的摩尔电导率随浓度增加而。(填“增加”，“减小”或“不变”) 2. 浓度为0.1·1的溶液中，和的离子迁移数的关系为t t。(填“>”，“<”或“=”) 3. 电极极化的结果是使阳极的电极电势更，阴极的电极电势更。(填“正”或“负”) 4. 表面活性剂是能使水的表面张力的物质。 5. 按表面张力的大小顺序排列下面四种液体：汞，苯，蒸馏水，食盐水。表面张力从大到小顺序排列为：。 6. 298K下，有如下两个反应均为(s) + 2+(a2) 2 (a1) 的电池： ⑴ (s) | (a1) (a1), 2+(a2) | ，， ⑵ (s) | 2+(a2) (a1), 2+(a2) | ，，
中南大学大学英语水平等级考试大纲 背景： 自1986年以来，中南大学非英语专业的本科生要参加国家大学英语四级考试，成绩合格以后才能获得学位证书。因此学校师生很重视大学英语的教学工作及四级通过率。由于学生的学位证书与国家四级英语成绩挂钩，应试教育也曾占据课堂，学生实际应用英语的能力较弱，毕业后难以应付英语要求较高的外企单位的工作。随着形势的发展，我校根据自己的实际情况，决定从2008级学生开始，学位证书与国家四级成绩脱钩，实行中南大学校内大学英语水平等级考试制度。 我们的思路是高起点，重能力。校内英语水平等级考试参照清华大学、北京大学等重点高校的《大学英语》考试标准，中南大学校内大学英语水平等级考试的目标要高于国家四级考试水平，考试突出测试学生的听说能力，书面表达能力及语言翻译能力等。如今，我校参与国际合作的机会越来越多，学生出国学习的机会也越来越多。如我们有中澳班：本科前两年在国内学习，后两年在澳大利亚学习。部分优秀本科生和研究生也可直接送往国外名牌大学培养。为了满足学生留学的实际需求，适应社会对人才的选拔，实现人才个性化、专业化的培养目标，中南大学校内大学英语水平等级考试的改革势在必行！ 2004年初教育部高教司组织制定并在全国部分高校开始试点《大学英语课程教学要求（试行）》（以下简称《教学要求》）。中南大学是首批试点的180所高校之一。我们实施《教学要求》的规定：“培养学生的英语综合应用能力，特别是听说与写作能力，使他们在今后工作和社会交往中能用英语有效地进行口头和书面的信息交流”。自《教学要求》在我校开始试点以来，广大教师十分关心并积极参加这次改革，在教学模式、教学手段和教材使用等各方面做了许多有益的尝试。参加试点的学生也普遍反映新的教学理念和方法，大大提高了学生学习英语的兴趣，实现了个性化学习，提高了学习的效率。但由于追求四级通过率，学生的语言实际应用能力提高缓慢。 2007年教育部办公厅印发《大学英语课程教学要求》，指出：“大学英语的教学目标是培养学生的英语综合应用能力，特别是听说能力，使他们在今后学习、工作和社会交往中能用英语有效地进行交际，同时增强其自主学习能力，提高综合文化素养，以适应我国社会发展和国际交流的需要。”为此，我们决定开设中南大学大学英语水平等级考试，主要考核学生的英语综合能力，同时也测试学生对词汇、语法结构、词语用法、语用语义等的掌握程度。 中南大学大学英语水平等级考试是一种为教学服务的标准化考试。包括本科生的英语入学考试（便于分级教学），期中英语考试，期末英语考试，毕业英语考试，研究生英语考试，英语口语的机器化考试，英语听力理解考试，均以中南大学大学英语考试题库为根据，随机提取各个等级的考卷。因此，中南大学大学英语水平等级考试的方向是保持考试的科学性、客观性和公正性，使考试最大限度地对大学英语教学产生正面的导向作用。即通过校内大学英语的考试，引导师生正确处理教学与考试的关系，更合理地使考试更好地为教学服务，更快地与国际接轨。中南大学大学英语水平等级考试的目标是更因地制宜地测量我校大学生的英语综合应用能力，尤其是英语听说能力，以体现社会改革开放对大学生英语综合应用能力的要求。由于中南大学大学英语水平等级考试是一个大规模的标准化考试，因此考试的设计需前瞻性与可行性相结合，分步实施，既有近期实施方案，又有中长期规划。 中南大学大学英语水平等级考试是基于大学英语分级教学和真正学分制基础上所采取的重要举措。计分体制和成绩报道方式为：笔试成绩占75%，口试成绩占25%，经过一次考试后，根据不同成绩梯队划分档次，A（优秀80分）、B（良好60分）、C（合格40分）、
《机械制造工艺学》课程实验报告 实 验 名 称： 加 工 误 差 的 统 计 分 析 姓 名： * * * 班 级： 机械13**班 学 号： 080113**** 实验日期：2015年10月 22 日 指导教师：何老师 成 绩： 1. 实验目的 （1）掌握加工误差统计分析方法的基本原理和应用。 （2）掌握样本数据的采集与处理方法，要求：能正确地采集样本数据，并能通过对样本数据的处理，正确绘制出加工误差的实验分布曲线和图。 （3）能对实验分布曲线和图进行正确地分析，对加工误差的性质、工序能力及工艺稳定性做出准确的鉴别。 （4）培养对加工误差进行综合分析的能力。 2. 实验内容与实验步骤 （一）实验内容：在调整好的无心磨床上连续加工一批同样尺寸的试件，测量其加 工尺寸，对测得的数据进行不同的处理，以巩固机制工艺学课程中所学到的有关加工误差统计分析方法的基本理论知识，并用来分析此工序的加工精度。 （二）原理分析：在实际生产中，为保证加工精度，常常通过对生产现场中实际加 工出的一批工件进行检测，运用数理统计的方法加以处理和分析，从中寻找误差产生的规律，找出提高加工精度的途径。这就是加工误差统计分析方法。加工误差分析的方法有两种形式，一种为分布图分析法，另一种为点图分析法。 1．分布图分析法 分布图分析法是通过测量一批加工零件的尺寸，把所测到的尺寸范围分为若干个段。画出该批零件加工尺寸（或误差）的实验分布图。其折线图就接近于理论分布曲线。在没有明显变值系统误差的情况下，即工件的误差是由很多相互独立的微小的随机误差综合作用的结果，则工件尺寸分布符合正态分布。利用分布曲线图可以比较方便地判断加工误差性质，确定工序能力，并估算合格品率，但利用分布图分析法控制加工精度，必须待一批工件全部加工完毕，测量了样本零件的尺寸后，才能绘制分布图，因此不能在加工过程中及时提供控制精度的信息，这在生产上将是很不方便的。 2．点图法 在生产中常用的另一种误差分析方法是点图法或图法。点图法是以顺序加工的零件序号为横坐标，零件的加工尺寸为纵坐标，把按加工顺序定期测量的工件尺寸画在点图上。点图可以反映加工尺寸和时间的关系，可以看出尺寸变化的趋势，找出产生误差的原因。 图称为平均尺寸——极差质量控制图。一般是在生产过程开始前，先加工一批试 件（本实验中即用本批加工的零件作为试件），根据加工所得的尺寸，求出平均值x 和极差R 而绘制成的。 x 点图：中线 ∑==k i i x k x 1 1
1 ---○---○--- ---○---○--- ……… 评卷密封线…………… 密封线内不要答题， 密封线外不准填写考生信息，违者考试成绩按0分处理…………… 评卷密封………线 ……… 中南大学考试试卷 2012 ~2013 学年一学期 大学物理 C 课程 时间100分钟 72学时，4.5学分，闭卷，总分100分，占总评成绩 70 % 一、选择题（共24分，每小题3分） 1．物体沿一闭合路径运动，经t ?时间后回到出发点A ，如 图所示，初速度1v ，末速度2v ，且12v v =，则在t ?时间内其 平均速度 v 与平均加速度a 分别为 （A ）v =0，a =0 （B ）v =0，a ≠0 （C ）v ≠0，a ≠ （D ）v ≠0，a =0 [ ] 2．一个质点作简谐振动，振幅为A ，在起始时刻质点的位移为A 2 1 - ，且向x 轴的正方向运动，代表此简谐振动的旋转矢量图为 [ ]
2 3．一简谐波沿x 轴正方向传播，4 T t = 时的波形曲线如图所示，若振动以余弦函数表示，且此题各点振动的初相位取-π 到π 之间的值，则 (A) O 点的初相为00=φ (B) 1点的初相为π- =2 1 1φ (C) 2点的初相为π=2φ (D) 3点的初相为π- =2 1 3φ [ ] 4．1P 、2P 与3P 三个偏振片堆叠在一起，1P 与3P 的偏振化方向相互垂直，2P 与1P 的偏振化方向间的夹角为30°。强度为0I 的自然光垂直入射于偏振片1P ，并依次透过偏振片 1P 、2P 与3P ，则通过三个偏振片后的光强为 （A ） 4 I （B ）830I （C ）3230I （D ）16 0I [ ] 5．折射率为1.5的平凸薄透镜，其曲率半径为10cm ，则在空气中焦距为 （A ）10cm （B ）15cm （C ）20cm （D ）25cm [ ] 6．一肥皂泡直径为5cm ，表面张力系数为2 105.2-?N ·m -1 ，泡内压强比大气压p （A ）大4pa （B ） 小4pa （C ）大2pa （D ） 小2pa [ ]
英语口语课程教学大纲 一、总纲 口语是语言基本功：听、说、读、写、译诸项技能之一，在外语教学中占有非常重要的地位。口语课旨在传授英语口语基础知识、对学生进行全面严格的基本技能训练，培养学生实际运用语言的能力，主要是口头交际能力，逐步达到在英语口头表达方面准确与流利相结合；扩大社会文化知识面，为升入高年级打好扎实的基础。英语口语课力图把学生置于英语国家文化背景之中，充分发挥学生的听说能力，引导学生积极主动地进行口语学习。把听说领先的教学原则置于一种真实、宽松、主动和持久的文化背景和语言环境中去贯彻和落实，摆脱学生“张口难”的障碍，培养学生掌握准确、流利的教学原则，提高英语口头表达和交际能力。英语口语教程内容覆盖面广，语言环境真实，情景意念生动有趣，语言范例标准地道，注意到不同场合的语言交际过程，强调学生全面的口语能力培养。 二、教学目的：英语口语课的目的是通过大量的口语练习和实践，逐步培养和提高学生用英语进行口头交际的能力，使学生能利用已掌握的英语，比较清楚地表达自己的思想；能就所听到的语段进行问答和复述，能就日常生活话题进行交谈，做到正确表达思想，语音、语调自然、无重大语法错误，语言基本得体；能运用交际策略绕过难点达到交际的目的；能准确掌握诸如询问、请求、建议、忠告等交际功能；能在不同的场合，对不同的人用恰当、得体的语言形式去体现不同的交际功能；逐步达到在英语口头表达方面准确与流利的结合。同时帮助学生了解主要英语国家的文化背景和生活习俗，培养学生的跨文化交际能力。 三、课程类别：公共课 四、教学时数：周学时数 3，总学时数96 五、开课时间：第一、二学期 六、开课专业：英语口语 七、教学对象：中等职业学校一年级学生 八、课程性质、培养目标和任务： 本课程的主要目的是提高学生的听力理解和口头表达能力，使学生在原有的听说基础上熟悉更 多地语言交际主题，指导学生掌握听说技巧。使学生侧重掌 握在旅游和餐饮主题方面的日常表达。在培养学生听说能力的过程中，培养学 生的专业学习兴趣，培养他们学会学习的能力，使学生取得在知识、能力、情感和态度等各方面 综合发展 九、课程内容和要求： （一）听 能够听懂课堂上老师所讲的单词、句子及简单的口语对话。能够基本听懂正常语速的听力 内容，并能听懂课堂实训时相关主题的讨论。 （二）说 能够就相关主题清楚地表达自己的观点。能够积极主动的参与到课堂和小组讨论中，积极 活跃的反映自己的观点。 （三）读 能够每天读一些英文美文，提高自己的口语表达能力。同学之间养成用简单英语口语交
统计学研究生排名 2010-05-02 10:16墨麒麟W | 分类：考研| 浏览11298次 本科为统计学，欲考2011年的经济统计学研究生，请各位大虾推荐几个比好一点的学校。。谢谢~ 分享到： 2010-05-02 12:55提问者采纳 全国各大学统计学专业的排名 2008-03-25 14:20 统计学 排名校名等级二级学科一级学科学科门 1 厦门大学A++ 020208统计学0202应用经济学02经济学 2 中国人民大学A++ 020208统计学0202应用经济学02经济学 3 上海财经大学A+ 020208统计学0202应用经济学02经济学 4 杭州商学院A 020208统计学0202应用经济学02经济学 5 天津财经学院A 020208统计学0202应用经济学02经济学 6 中南财经政法大学B+ 020208统计学0202应用经济学02经济学 7 北京大学B+ 020208统计学0202应用经济学02经济学 8 复旦大学B+ 020208统计学0202应用经济学02经济学 9 南开大学B+ 020208统计学0202应用经济学02经济学 10 东北财经大学B+ 020208统计学0202应用经济学02经济学 暨南大学B 020208统计学0202应用经济学02经济学 中央财经大学B 020208统计学0202应用经济学02经济学 西南财经大学B 020208统计学0202应用经济学02经济学 辽宁大学B 020208统计学0202应用经济学02经济学 中国研究生教育020208统计学专业排行榜：
排名学校名称等级排名学校名称等级排名学校名称等级 1 中国人民大学A+ 5 天津财经大学 A 9 西安交通大学 A 2 东北财经大学A+ 6 中南财经政法大学 A 10 辽宁大学 A 3 上海财经大学 A 7 浙江工商大学 A 11 中央财经大学 A 4 厦门大学 A 8 暨南大学 A B+ 等(16 个) ：湖南大学、安徽财经大学、江西财经大学、北京大学、山西财经大学、西南财经大学、西安财经学院、南京财经大学、河北经贸大学、天津大学、兰州商学院、云南财经大学、首都经济贸易大学、福建农林大学、重庆工商大学、山东经济学院 B 等(17 个) ：西北工业大学、江苏大学、河北大学、西北师范大学、贵州财经学院、长沙理工大学、广东商学院、石河子大学、杭州电子科技大学、新疆财经学院、内蒙古财经学院、长春税务学院、河南财经学院、福州大学、山东财政学院、中南大学、深圳大学 你好！我也是要考2011年统计学研究生，人大厦大的最好··但是难考··可以考虑下中财或者上财·· 提问者评价 3Q 评论(2)|270 shiningOK |三级采纳率28% 擅长：欧美流行乐考研烦恼 按默认排序|按时间排序 其他1条回答 2010-05-02 17:02spj1994|四级 全国各大学统计学专业的排名 2008-03-25 14:20 统计学 排名校名等级二级学科一级学科学科门 1 厦门大学A++ 020208统计学0202应用经济学02经济学 2 中国人民大学A++ 020208统计学0202应用经济学02经济学 3 上海财经大学A+ 020208统计学0202应用经济学02经济学 4 杭州商学院A 020208统计学0202应用经济学02经济学 5 天津财经学院A 020208统计学0202应用经济学02经济学
My view on college romance When we are in middle school, the romance between boys and girls is banned by parents and school. On the one hand the adults believe that we are not old enough, on the other hand they think the so called romance will influence teenagers’ study, especially the review to the college entrance examination, so just they ban it without a second thought. But when we are in college, college romance becomes more natural. Mostly college romance begins even when we are not aware of it. People always say college is a place which is full of magical atmosphere of youth, passion and dream. And love is one of these magical atmosphere. So it’s not difficult to understand why so many students fall in love so quickly, naturally and deeply. In some way the college love can be seen as a way to grow up, it’s also a chance to learn how to communicate with and take care of others. When we are lost in love deeply, the feeling of love in the bottom of our hearts will make our life more colorful because we finally know we should do something to make our lover happy. And most of these things, I have to say, have not been done by us before, and it is just this fresh feeling that makes us glad. There are some disadvantages of college romance, too. Some students find love just because they want to get rid of loneliness, so they do not love each other truly and sincerely. As a result of this thought, both of the two may hurt each other in the aspect of emotion when they split up. What’s more, college love calls for lots of money and time, if students can not deal with them in a proper way, then they’ll just mess their life up. In a word, I’m positive about college love as long as it develops naturally and in a healthy way. How to give compliments Giving compliments in life is not as easy as we think, in some way, it is a kind of wisdom which needs lots of knowledge and shills. After my research on this subject, I dare say I can give some useful tips that can help people make it easier to pay compliments. First of all, if someone wants to praise others, no matter what way he uses, he should be genuine. Remember that honesty is one of the precious qualities we ought to be equipped with for good. We should never exaggerate others’ achievements and merits, or we will just fail to give any compliment. In addition to our sincere attitude, we’re supposed to be clear that the language we use to give compliments should be specific and appropriate. For example, instead of saying ”Great job!”, we’d better say ” Great job! I really appreciate the way you work and your ability to deal with difficult problems. Can you introduce some skills to me if you do not mind?”If we give