河南工学院2018―2019学年第二学期期末考试

合集下载

2018-2019学年河南省南阳市高二下学期期末考试物理试题(Word版)

2018-2019学年河南省南阳市高二下学期期末考试物理试题(Word版)

2019年春期高中二年级期终质量评估物理试题一、选择题(本题共12小题,每小题4分,共48分。

在每小题给出的四个选项中,1-8题只有一个选项正确,9-12题有多个选项正确,全部选对得4分,选对但不全的得2分,有错选或不答的得0分)1.下列说法中正确的是A .光是一种纵波B .声波和电磁波都会发生多普勒效应C .动能相等的质子和电子,它们的德布罗意波长相等D .变化的电场一定产生变化的磁场2.对放射性元素原子核衰变的特点,以下说法正确的是A .衰变现象表明原子具有核式结构B .α射线是高速氦核流,具有很强的贯穿本领C .降低放射性物质的温度,可以缩短其半衰期D .普朗克在研究黑体辐射问题时提出了能量子假说 3.某质点做简谐运动,其位移随时间变化的关系式为x=5 sin4t (cm),则下列关于质点运动的说法中正确的是A .质点做简谐运动的振幅为10cmB .质点做简谐运动的周期为4sC .在t=4s 时质点的速度最大D .在t=4s 时质点的加速度最大4.如图所示,为一列简谐横波在t=0时的波形图,波源位于坐标原点。

已知当t=0.5s 时,x=4 cm 处的质点第一次位于波谷,下列说法正确的是A .此波的波速为4m/sB .波源在t=0时运动速度沿y 轴正方向C .t=0时,波源已振动0.6sD .x=10cm 的质点在t=1.5s 时处于波谷位置5.原子核的比结合能曲线如图所示。

根据该曲线,下列判断正确的是A.42He核比63Li核更稳定B.42He核的结合能约为14MeVC.两个21H核结合成42He核时吸收能量D.23592U核裂变成8936Kr和14656Ba核的过程中,核子的平均质量增加6.在光电效应实验中,某同学用同一光电管在不同实验条件下得到了三条光电流与电压之间的关系曲线(甲光、乙光、丙光),如图所示。

则A.乙光的波长大于丙光的波长B.甲光的频率大于乙光的频率C.甲光的频率小于乙光的频率D.甲光对应的光电子最大初动能大于丙光对应的光电子最大初动能7.光子能量为E的一束单色光照射容器中大量处于n=2能级的氢原子,氢原子吸收光子后,发出频率为ν1、ν2、ν3、ν4、ν5和ν6的光,且ν1<ν2<ν3<ν4<ν5<ν6,则E等于A.hν1B.hν 3 C.hν 4 D.hν 68.如图所示,位移(x)-时间(图像和速度(v)-时间(t)图像中给出四条图线,甲、乙、丙、丁代表四辆车由同一地点向同一方向运动的情况,则下列说法正确的是A.甲车做直线运动,乙车做曲线运动B.0-t2时间内,丙、丁两车的平均速度相等C.0-t1时间内,甲车通过的路程大于乙车通过的路程D.0-t2时间内,丙、丁两车在t2时刻相距最远,中空真9.如图所示,是研究光电效应的电路。

2018-2019学年第二学期期末考试

2018-2019学年第二学期期末考试

2018-2019学年第二学期期末考试作弊学生的案例(一)雷某,数字传媒系学生。

考前辅导员开班会曾强调考试要做到诚信考试,但该生在2018-2019学年第二学期期末专业课考试时,监考老师发现该生总是在移动自己的试卷,并时不时往答题卷上书写内容,发现该生夹带纸条并藏于试卷下,监考老师要求该生将试卷拿起来检查,该生拿起试卷后,在桌面上就有几张小纸条,并且是与本场专业课考试相关的内容,监考老师当场收了试卷并上报了学院相关部门进行审查;经过学院院长办公会讨论后,认为该生作弊事实清楚,决定给予其留校察看处分并该门成绩以0分计。

(二)游某某,土木工程系学生。

辅导员于考前进行考风考纪教育主题班会教育,并强调作弊后结果将严格按照《贵州大学明德学院学生违纪处分规定》作出处理等。

6月20日辅导员、班主任再次对各班进行系统性考前教育“严于律己,诚信考试”主题班会,各位同学会后均签署《诚信考试承诺书》。

该生在6月24日下午专业课考试时携带小抄进入考场,监考老师调换该生位置时,发现该生试卷中携带小抄,小抄内容与考试内容相符,监考老师当场收了试卷并上报了学院相关部门进行审查;经过学院院长办公会讨论后,认为该生作弊事实清楚,决定给予其留校察看处分并该门成绩以0分计。

(三)王某,健康管理系学生。

辅导员于6月19召开考风考纪主题班会。

告知考生参加考试必须带齐身份证、学生证两证,缺一不可,要提前调试好耳机,带齐考试用具、并注意考试时间。

以及期末考试要做好复习,诚信考试,严禁携带与考试无关的书籍资料进入考场,更严禁夹带“小抄”、书籍、手机、电子通讯设备等进入考场。

严禁任何形式的作弊、协同作弊(如夹带、传递抄袭、偷看、换卷、换座、交头接耳,在课桌或身体上书写文字或符号、替考、借故暂离考场等)。

重点强调了考试作弊的严重后果(影响学位证的发放),对考试过程中哪些行为会被视为考试作弊进行了阐述。

但该生在6月24日下午期末考试时,携带小抄进入考场,监考老师在试卷下发现小纸条后收了试卷,并上报了学院相关部门进行审查;经过学院院长办公会讨论后,认为该生作弊事实清楚,决定给予其留校察看处分并该门成绩以0分计。

大学英语(2)试卷14

大学英语(2)试卷14

河南工学院2017―2018学年第二学期期末考试《大学英语(2)》(本科)14卷命题教师:外语系适用班级:17级本科专业考试方式:闭卷考试时间:120分钟课程承担单位:外语系公外第一教研室试卷总分:100分Section A (1%×5 = 5%)Directions: This section is to test your ability to understand short dialogues. There are five recorded dialogues in it. After each dialogue, there is a recorded question. Both the dialogues and questions will be spoken ONLY ONCE. When you hear a question, you should decide on the correct answer from the four choices marked A, B, C and D given in your test paper. Then you should write the corresponding letter on the Answer Sheet.Example:You will hear: M: Would you please give Mr. Right a message?W: Sorry. Mr. Right is having a holiday in Chicago.Q: What does the woman mean?You will read:A. The woman is busy working.B. The woman cannot take the message.C. Mr. Right is in his office.D. Mr. Right will be back soon.From the dialogue we learn that Mr. Right is away for holiday. Therefore,choice B. The woman cannot take the message.is the correct answer. Youshould write B on your Answer Sheet. Now the test will begin.1. A. It is still raining. B. It has cleared up.C. It has stopped raining.D. It is still snowing.2. A. Do some typing. B. Buy some paper.C. Get a typewriter.D. Go out for exercise.3. A. He smoked before. B. He likes smoking.C. He never smokes.D. He is starting to smoke.4. A. The man hasn't made up his mind yet.B. The man doesn't know where to go.C. The man has been to Japan before.D. The man wants to visit Japan.5. A. It was a failure. B. It was interesting.C. She thought she had passed it.D. She thought it was hard to tell.Section B (1%×5= 5%)Directions: This section is to test your ability to understand long conversations. There is one recorded conversation in it. After the conversation, there are some recorded questions. Both the conversation and the questions will be spoken TWICE. When you hear a question, you should decide on the correct answer from the four choices marked A, B, C and D in your test paper. Then you should write the corresponding letter on the Answer Sheet.6. A. Husband and wife. B. Customer and shop-assistant.C. Customer and waitress.D. Customer and bank clerk.7. A. A bag. B. A case.C. A jacket.D. A car.8. A. 14. B. 40.C. 41.D. 42.9. A. Light blue. B. Yellow.C. Dark blue.D. Brown.10. A. $42.19. B. $14.99.C. $24.19.D. $24.99.Section C (1%×10= 10%)Directions:This section is to test your ability in dictation. You will hear a recorded passage TWICE. When you are listening to the passage, try to fill in the blanks with words, phrases, or sentences according to what you hear from the recording. Please write your answers on the Answer Sheet.My favorite sport is running, but when I ran my first 11 , it was the hardest thing I've done in my life. Now I have been running for 50 years. Each time, I 12 as much as 8 miles and I have developed a 13 of running every day. Many people like running. There are several 14 why running seems to be the 15 form of exercise for them. 16 , it is something everybody knows how to do, so there is no special 17 needed for it. Secondly, it is something you can do 18 . Of course, you must have a good pair of shoes. You can run if you live in a city. You can run where you 19 . Running is also something you can do 20 , in the evening, in the early morning, or even in a rain if you like.Part II. Reading Comprehension (2%×20=40%)Directions: There are 4 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice andwrite the corresponding letter on the Answer Sheet.Passage 1Terms and Conditions of EmploymentThese terms and conditions should be read before you sign your contract.Salary: Your starting salary is: $15,000. This is reviewed annually.Hours: The normal hours of work are eight hours a day, Monday through Friday. You will start work on Feb. 21, 2008. On the first morning, report to your line manager John Knight.Health and safety: Please read the safety regulations attached. If you have any questions, contact the health and safety officer, whose name is at the top of the regulation sheet. If you have health problems, please inform the Senior Nurse, Chris Thomas. If you cannot work because of illness, please telephone the factory.Annual leave: During your first year of employment you are allowed twenty days' leave. This should be arranged with your line manager.Overtime(加班): If you work more than forty hours a week, you will be paid at the current overtime rate. Your line manager will keep a record of the overtime you work. If you work on public holidays, you will be paid at the current rates. If you prefer, time can be taken instead of extra pay for public holidays and overtime.Clothing: The Supplies Department provides overalls (工作服). Inform Supplies of your size two days before you need them. You can also order any other equipment you need for your job from Supplies.21. According to the contract, the salary of the employee_____.A. is paid weekly.B. is adjusted every quarter.C. is re-examined from year to year.D. is fixed for the whole contract period.22. If employees have any health problem, they should______.A. telephone the factory.B. inform the Senior Nurse.C. report to their line manager.D. contact the health and Safety officer.23. The line manager is responsible for______.A. giving a pay raise.B. signing a contract.C. arranging annual leave.D. helping with personal affairs.24. If employees work on public holidays, usually they will get______.A. extra days off.B. extra money.C. a pay raise.D. paid holidays.25. When they need overalls for their job, employees should inform the Supplies Department of_______.A. the sizeB. the colorC. the styleD. the quantityPassage 2Parrots are becoming one of the most popular pets in America and for good reason. The parrot is an extraordinary bird that can be taught to talk, can be easily cared for, and can create a lively atmosphere anywhere. With the help of an energetic parrot owner, a parrot can develop an enormous vocabulary. In addition, a parrot can be trained to say “Pretty boy” or “Polly wants a cracker,” and it also can learn to whistle or sing. No matter what an owner decides to teach a bird, training a parrot takes much patience, but the reward is a stream of chatter. Another reason for the parrot’s popularit y is that this pet does not require much care. For example, even a spoiled parrot does not need a housesitter for the purpose of daily walks and daily feeding. In fact, a parrot owner may leave his or her pet with enough food for five daysand have no fear that the parrot will overeat.Still another advantage of owning a parrot is its inexpensive food, including seeds, nuts, corn, and grain—along with an apple, banana, or carrot. Perhaps the most likely reason the parrot is becoming such a well-liked pet is that it is a combination of tameness and wildness. Because the parrot can live in almost any environment, it makes a fine, tame companion for many people. In addition, because it can be easily trained, it is a delightful performer. At the same time, its colorful feathers give it an air of the mystery of the parrot’s native home, the jungle. Thus, the parrot, once a highly valued gift presented to kings and noble families, is now appreciated by a growing number of people.26. A parrot can be trained to do all the following but______________.A. talk.B. help its owner.C. sing.D. create a lively atmosphere.27. Which of the following is not a reason for the easy raising of the parrot?A. It eats very little.B. Its food is inexpensive.C. It does not need a housesitter.D. It does not require daily walks as dogs do.28. The word “tameness” in the passage means______________.A. the quality of being brave or unafraid.B. the quality of being kind or warm-hearted.C. the quality of being uncontrolled or fierce.D. the quality of being gentle or trained.29. The word “jungle” probably means______________.A. boundless desert with very little plant life.B. large apartment building with pleasing surroundings.C. wild land overgrown with thick bushes and trees.D. snow-covered mountain top in very cold areas.30. The writer______________.A. likes the parrot.B. dislikes the parrot.C. does not like nor dislike the parrot.D. values the parrot highly.Passage 3Because college is so expensive, I know I will have to major in a practical field that can give me a secure life. That will be probably something in science or business. But while I am here, I want to study the violin as well.I have played th e violin since I was in sixth grade, but I didn’t always love it. In the beginning, it was my parents’ idea for me to learn the violin. First, they bought me the violin, which automatically made me feel obliged to play it. After all, they had invested several hundred dollars in it. My mother, who had been a pianist before she married my father, required me to practice an hour each day. I hated this; I would hear my friends playing outside as I played a few notes, then stare sadly at the little clock on my bedroom dresser. Why wouldn’t the hands move faster? I remember one time I came up with the idea of moving the hands forward about fifteen minutes. I knew my mother would know it hadn’t been an hour, but I thought I could say, “But my clock said 4:00 when I went into my room and now it says 5:00.” Fortunately, she never asked me why I had stopped early. Maybe she was relieved after having had to listen to my screeches on the violin.My attitude changed when I finally became good enough to play some of the classical composers. Suddenly it became very important for me to get it right. I no longer heard what was going on outside with my playmates while I practiced. I was lost in the music. I would repeat the same bars again and again, sometimes just for the pleasure of hearing the notes trickle like running water or jump like crickets. Sometimes, I gave myself goose-bumps.I even began listening to the classical radio stations and recognizing theviolin pieces.My high school orchestra instructor noticed the change in me too. One day, he asked me to stop by his desk after class.“You wanted to talk to me?” I said nervously.“Sophia, yes,” said Mr. Cooke. He reached into a file on his desk and pulled out some sheet music. “Our next performance incl udes a violin solo. Do you think you could learn to play this over the next couple of weeks?”“Me?” I squeaked. “You want me to do a solo?” I felt like saying, are you sure you’re not confusing me with another Sophia who plays the violin?“Yes, you,” he laughed. “I noticed you’ve been putting a lot of passion into your playing. This piece needs that kind of passion.”Of course, I learned it and performed it and received a lot of praise for my performance. But what Mr. Cooke had said about passion made me realize that I was entering a whole new level of music study. A musician can play an instrument with technical correctness, but passion brings the music to life, makes it carry messages to people who don’t even speak the same language.I want to continue developing my technical abilities in music and find ways to develop my passion and put it into my music. That’s why I plan to continue studying music at college and hope to join the college orchestra. My career will probably belong to science, business, or technology. But my soul belongs to music.31. How did the girl feel after she moved the hands of the clock forward?A. She felt guilty for it because her parents had invested a lot for her violin and the learning of it.B. She felt sure that her mother wouldn’t criticize her because the screeches on the violin had been a torture to her mother.C. She felt worried before her mother walked in because she couldn’tfind good excuses for it.D. She felt happy secretly because she was not interested in the violin and that could shorten her practicing time greatly.32. Which of the following statements is NOT a true description of the author after she became interested in the violin?A. She no longer envied the playmates that played outside when she was practicing.B. She would repeat practicing the same bars to enjoy the pleasure of music.C. She challenged herself to play only some classical composers.D. She would find ways to test her technical skills.33. What’s the author’s reaction when she was asked to play a violin solo?A. She felt disappointed because she preferred teamwork with her group members.B. She felt nervous because she was unconfident with her playing skill.C. She felt pleasantly surprised and at first wondered whether she was mistaken for another girl with the same name.D. She felt too excited to express herself well.34. Which element has made the author’s play special?A. Technical correctness.B. Passion for music.C. Diligent practice.D. The guidance of a famous teacher.35. According to the passage, which of the following statements is NOT true?A. Music will always be the author’s favorite no matter what she will choose as a profession in future.B. The author is an obedient girl because she would still insist practicing even though she was not interested in the violin from the very beginning.C. The girl began to love the violin after others’ praises for her performance made her feel a great sense of achievement.D. The girl believes that to do something in science or business will ensure herself a more secure material life.Passage 4Modern dream theorists have suggested that we can understand and use our dreams because for the most part they are extensions of the situations we face when awake. Our dreams are not hiding from us: they are there for us to explore and use in solving our problems.If we learn to think about our dreams comfortably, we will be able to discard those that seem totally irrelevant to our lives. On the other hand, we will be able to explore those that fascinate us and those that seem to be connected with the ways we think and act when we are awake. Or we might use our dreams to expose problems that we have refused to accept consciously, and this might lead us to take positive action and solve them. Thinking about our dreams might also help us understand that we are sometimes aggressive, angry or afraid, although we may have tried to ignore these feelings and pretended that they do not exist within us. If we admit that we do have such emotions, we may be able to accept, control and channel them.Most people do not realize, during the actual dream, that they are dreaming. They are totally at the mercy of their unconscious thoughts, and they are unable to stop or change the course of their dreams. There are a few people, however, who can manipulate their dreams. These unusual people have a creative and psychological advantage. They can write a poem, find a mathematical solution, or discover the answer to the problems of the universe in their dreams, and then wake themselves up immediately while the memory of their dreams is vivid and precise. Some people can even extend their dreams. They can force their unconscious minds to work on a problem until it is solved or prolong a happy dream further into the night.Dreams are pictures of our unconscious minds. We can analyze them to probe our thoughts and emotions. We can use them creatively for artistic expression and solving problems, or we can simply enjoy them as provocative adventures. In any case, they should be seen, heard, and welcomed into our conscious world.36. What does the underlined word “aggressive” in Paragraph 2 mean?A. Scary.B. Negative.C. Eager to fight.D. Active.37. If we learn to think about our dreams comfortably, we may _______________.A. make judgment on what we do in reality.B. be able to accept and control our unpleasant hidden emotions.C. find an outlet for pressure caused by practical problems.D. be fascinated by the ways we act to deal with things in dreams.38. Which of the following statement is NOT correct according to the passage?A. Most people dream unconsciously.B. It is easy to manipulate one’s dream.C. Dreams reflect what we face when awake.D. We can use dreams for artistic creation.39. Which of the following statements is NOT mentioned about what only a few unusual people can do?A. The unusual people can stop and change the course of their dreams.B. They can wake themselves up when necessary.C. They can make themselves solve certain problems in dream.D. They can use their dreams to predict the future.40. Which of the following is the most suitable title for the passage?A. How to manipulate your dreams?B. How to understand your dreams?C. Your dreams don’t lie.D. Is dream conscious?Part III. Translation (20%)Directions: Translate the following sentences into English or Chinese. You should write your answers on the Answer Sheet.1.在国外留学时如果你不介意被打扰,那就找个室友分摊房租吧。

2018-2019学年河南省南阳市高三年级期末考试理科综合试卷(含答案)(扫描版)

2018-2019学年河南省南阳市高三年级期末考试理科综合试卷(含答案)(扫描版)

2018年秋期高中三年级期终质量评估理科综合能力测试(物理部分)参考答案第Ι卷 选择题二、选择题(本题共8小题,每小题6分,共48分。

在每小题给出的四个选项中,第14~18题只有一项符合题目要求,第19~21题有多项符合题目要求。

全部选对的得6分,选对但不全的得3分,有选错的得0分。

)14.C 15.D 16.C 17.B 18.A 19.BD 20.ABD 21.BC第Ⅱ卷 非选择题三、非选择题(共174分。

第22~32题为必考题,每个试题考生都必须作答。

第33~38题为选考题,考生根据要求作答。

)(一)必考题:共129分.22.(6分)(1) 2.150(2.148~2.152均可) (4)大于 (5) g =5kd 2/L (每空2分)23.(9分)(1) 1(2分)做法(一):(3分) 做法(二):(3分)(2) 1.5(1.48~1.52均可)(2分) (2) 1.5(1.48~1.52均可)(2分)5.0(4.8~5.2均可)(2分) 4.3(4.0~4.5均可)(2分)24.(12分)解:(1)AB 动量守恒210Mv mv -=………………2分能量守恒22212121Mv mv E p +=………………2分 得m/s 81=v ,m/s 22=v ………………2分(2)A 与墙壁碰后速度大小不变对AB 动量守恒v M m Mv mv )(21+=+………………2分m/s 2.3=v ………………1分对A 、B 黏合体,由动能定理2)(21030sin )(v M m gL M m +-=︒+-………………2分m 024.1=∴L ………………1分25.(20分)解:(1)正点电荷在区域Ⅰ,根据平衡条件有mg B qv =0………………2分 在区域Ⅱ中所受的qE mg =,做匀速圆周运动,1200R v m B qv =………………2分 由几何关系得21221)2()(R L L R =+-………………2分 L R 251= L g q m B 52=………………1分 gL v 250=………………1分 (2)在区域Ⅲ中:电场力与重力平衡 有220022R v m B qv R kQq =-………………2分 由542sin 1==R L θ 2cos R L =θ,L R 352=………………2分 得P 点点电荷的电荷量kq mgL Q 181252=………………2分 (3)正点电荷在区域Ⅱ中的运动时间01123602v R t πθ•︒=………………2分 在区域Ⅲ中运动的时间022********v R t πθ•︒+︒=………………2分 正点电荷从1O 出发回到1O 的时间g L t t t 5210844521•=+=π………………2分 (二)选考题 请考生从给出的2道物理题、2道化学题、2道生物题中每科任选一题做答。

2018-2019年度学年度八学年第二学期期末物理试题(有答案解析)

2018-2019年度学年度八学年第二学期期末物理试题(有答案解析)

绝密★启用前2018-2019学年度八年级第二学期期末物理试题第I卷(选择题)请点击修改第I卷的文字说明一、单选题1.实心的铁球,将其表面打磨了一些,未发生变化的是铁球的A.密度B.体积C.质量D.重力2.关于粒子和宇宙,下列认识中正确的是A.太阳是宇宙的中心,恒星是绝对不动的B.太阳光下看到灰尘飞舞,说明分子在不停地做无规则运动C.物理学家汤姆生发现了电子,从而揭示了原子是有结构的D.将两块表面平滑的铅块压紧后,它们会粘在一起是因为大气压的作用3.如图所示,悬停在空中的直升机,受到向上的升力,这个力的施力物体是A.空气B.螺旋桨C.地球D.发动机4.图是描述地球上不同位置的人释放手中石块的四个示意图,图中虚线表示石块下落的路径,则对石块下落路径的描述最接近实际的示意图是5.下列生活实例中,属于增大压强的是()A.大型载重货车有很多车轮B.铁路的钢轨铺在枕木上C.取出一些书的书包背起来更舒服D.剪刀的刀刃做得很薄6.如图,用力F把一木块压在墙面上保持静止。

对物体受力分析有以下的说法①手对木块的压力和墙对木块的弹力是一对相互作用力②手对木块的压力和木块的重力是一对平衡力③木块受到的摩擦力和木块的重力是一对平衡力④手对木块的压力和木块对手的弹力是一对相互作用力上述表述中正确的是A.只有②正确B.只有④正确C.只有①③正确D.只有③④正确7.关于惯性,下列四个现象中对应的说明错误的是A.拍打刚晒过的被子,灰尘脱落,说明灰尘有惯性B.汽车紧急刹车,车上的人会向前倾,说明车有惯性C.箭离开弓弦后,仍能向前飞行,说明箭有惯性D.手握锤柄在地面上撞击几下,锤头就能紧套在锤柄上,说明锤头有惯性8.如图甲所示,质量相同的a、b、c三种液体分别装在三个相同的玻璃杯中,如图乙是它们的质量与体积的关系图象,三个杯子从左至右依次装的液体种类是()A.b、c、a B.a、c、b C.a、b、c D.c、b、a9.如图是足球运动员踢足球时的情景,下列说法正确的是A.球被脚踢出去,说明只有球才受到力的作B.脚踢球使球飞出去,说明力是物体运动的原因C.足球在空中飞行过程中,运动状态一定发生改变D.空中飞行的足球,若它所受的力全部消失,它一定沿水平方向做匀速直线运动10.如图所示,小明用该装置较方便地测量物块B所受滑动摩擦力的大小,为了完成实验,小明需用手给物块A或B施加一个水平方向的力,以下操作正确的是A.给物块B施加向右的力,使它匀速运动B.给物块B施加向左的力,使它加速运动C.给物块A施加向右的力,使它加速运动D.给物块A施加向左的力,使它匀速运动第II卷(非选择题)请点击修改第II卷的文字说明二、填空题13.在下面的空格中填入适当的数字或单位:(1)某中学生的质量约是45 ____ ;(2)一个鸡蛋的质量约是50 _____;(3)水的密度是_____kg/m3=_____ g/cm3.14.4月田野里油菜花盛开,走在田埂上闻到沁人的花香,这说明分子____;水很难被压缩,说明分子间有____;把酒精和水充分混合,总体积将____说明分子间有_____.15.用20N的水平力拉重100N的木块,使它在水平面上做匀速直线运动,木块受到的摩擦力为____N.若运动中拉力变为15N,木块受到的摩擦力为____N,木块的运动状态将_____(选填“改变”或“不改变”).16.如图甲所示,盛有水的烧杯随小车一起水平向右做________(选填“加速”“减速”或“匀速”)运动,当烧杯中的水面出现如图乙所示的状态时,小车此时正在做________(选填“加速”“减速”或“匀速”)运动,作出上述判断的依据是________(选填“水”或“烧杯”)具有惯性。

初中历史河南初二期末考试测试试卷一含答案考点及解析

初中历史河南初二期末考试测试试卷一含答案考点及解析

2018-2019初中历史河南初二期末考试测试试卷一含答案考点及解析班级:___________ 姓名:___________ 分数:___________1.答题前填写好自己的姓名、班级、考号等信息2.请将答案正确填写在答题卡上一、选择题1.战士们唱着“打倒军阀,除列强”的时代战歌,从珠江流域打到长江流城这一历史镜头反映的是()A.五四运动B.北伐战争C.抗日战争D.解放战争【答案】B【解析】试题分析:题干中出现的“打倒军阀,除列强”的时代战歌出现在北伐战争中。

此战争是由中国国民党领导下的国民政府以国民革命军为主力于1926年至1927年间发动的统一战争,沉重地打击了北洋军阀的统治,加速了中国革命历史的进程。

考点:人教新课标版八年级上册·新民主主义革命的兴起·北伐战争。

2.抗战开始后指挥国民党军队在台儿庄取得重大胜利的将领是()A.林彪B.李宗仁C.张学良D.傅作义【答案】B【解析】试题分析:结合题干中的提示词“台儿庄”可知,本题考查了抗日战争中台儿庄战役的有关情况。

这次战役的主要指挥者是李宗仁,战役的胜利是中华民族全面抗战以来,继长城战役、平型关大捷等战役后,中国人民取得的又一次胜利,是抗日战争以来取得的最大胜利。

考点:人教新课标版八年级上册•中华民族的抗日战争•血肉筑长城。

3.“红色战士志气昂,好比东方升起的太阳,不怕牺牲,英勇杀敌猛如虎,冲锋陷阵,无坚不摧谁敢挡。

”这是红军长征期间出现的一首战斗歌曲。

以下长征途中发生的重大历史事件,按时间先后顺序排列正确的是①湘江战役②巧渡金沙江③吴起镇会师④飞夺泸定桥⑤甘肃会师⑥爬雪山,过草地A.①②④⑥③B.①②⑤③④C.②①④⑥⑤D.①③④②⑥⑤⑥③⑤【答案】A【解析】试题分析:长征途中发生的重大历史事件,按时间先后顺序排列是:强渡湘江——强渡乌江——遵义会议——四渡赤水——巧夺金沙江——强渡大渡河——夺占泸定桥——过雪山草地——吴起镇会师——甘肃会宁会师,故选A。

河南省新乡市2018—2019学年下学期八年级物理期末考试试卷(含答案)

河南省新乡市2018—2019学年下学期八年级物理期末考试试卷(含答案)

2018—2019学年八年级下期终结性评价测试物理(北师大版)注意事项:1.本试卷共6页,五大题,23小题,满分70分,考试时间60分钟.请用钢笔或圆珠笔直接答在试卷上,选择题的答案填在答案栏中. 2.答卷前将密封线内的项目填写清楚.题号 一 二 三 四 五 总分 分数得分 评卷人一、填空题(每空1分,共14分)1.在森林里不允许随地丢弃透明的饮料瓶,这是由于雨水进入饮料瓶后对光的作用相当于一个___________镜,它对太阳光的___________作用,可能会导致森林火灾. 2.如果没有好的用眼习惯,容易使眼睛近视.近视眼看不清远处的物体,来自远处某点的光会聚在视网膜___________(选填“前”或“后”).其矫正方法是配带___________透镜.3.暴风雨来临前,狂风把小树吹弯了腰,把落叶吹得漫天飞舞.从力的作用效果分析,风力使小树发生了___________,使落叶的___________发生了改变.4.把重10N ,体积为1.2×103 cm 3的物体投入水中,当物体静止时,物体的状态是___________(选填“漂浮”、“悬浮”、“沉到水底”)(g 取10N /kg).5.如图1所示,在两张纸片中间向下吹气,可观察到两张纸片___________(选填“靠拢”或“远离”),这是因为气体流速越大的地方压强越___________.6.医生把注射器针头插入药水瓶,向外拉注射器活塞时,药液在___________的作用下进入注射器内.注射器针头做得比较尖, 这是为了___________.7.如图2是一种拉杆式旅行箱的示意图,使用时相当于一个___________(选填“省力”或“费力”)杠杆,若箱和物品共重100N ,设此时动力臂是阻力臂的5倍,则抬起拉杆的力F为_______N .图1 图28.图3是温哥华冬奥会冰壶比赛时的一个画面.冰壶是以三个人为单位在冰上进行的一种投掷性竞赛项目.当投掷手将冰壶投出后冰壶向前运动时,同队有两名队员手持毛刷,在冰壶运行的前方用力来回擦刷冰面,使冰壶溜进营垒或接近营垒.请你根据上述描述,提出一个与你学过的物理知识有关系的物理问题:_______________________? 得分 评卷人二、选择题(每小题2分,共16分)在每个小题的选项中,只有一个选项符合题目要求,请将其序....号填入下面的答案栏中........... 题号 9 10 11 12 13 14 15 16 答案9.探究烛焰通过焦距是10 cm 的凸透镜成像规律时,蜡烛、透镜、光屏位置如图4所示,此时 A .a 为物距 B .b 为焦距C .凸透镜成放大的烛焰像D .若蜡烛、透镜不动,仅移动光屏,烛焰可在光屏上成清晰的像10.如图5所示是简易照相机的成像示意图,以下说法中正确的是A .照相机使用的是凸透镜B .照相机使用的是凹透镜C .所成的像是正立、缩小的实像D .所成的像是倒立、缩小的虚像11.力的作用都是相互的,下列现象中没有利用这一原理的是A .向前划船时,要用桨向后拨水B .人向前跑步时,要向后下方蹬地C .火箭起飞时,要向下方喷气D .头球攻门时,要向球门方向用力顶球12.某物体在平衡力的作用下,做匀速直线运动.若它所受的平衡力突然全部消失,则物体将A .立即停止运动B .逐渐减慢,最终停下来C .仍然做匀速直线运动D .在水平方向上匀速直线运动下去 13.下列做法中正确的是A .人推桌子未动,这时人的推力小于地面对桌子的摩擦力图3图4图5B .在平直的公路上匀速行驶的汽车,受平衡力作用C .物体受平衡力的作用,一定保持静止状态D .运动的物体有惯性,静止的物体无惯性 14.下列事例中,利用大气压作用的是A .小王将新鲜空气吸入肺里B .医生用针筒把药水推入病人肌肉中C .用力压打气筒的活塞,把空气充进轮胎中D .高压锅15.将一块实心物体放入盛水的烧杯中,物体静止时如图6所示.若将该物体分成大小不同的两块,仍然放在盛水的烧杯中,则 A .大块沉入杯底,小块飘在水面上 B .大块、小块都沉入杯底 C .大块、小块都飘在水面上 D .大块、小块都悬浮在水中16.一块砖放在水平地面上,若沿竖直方向切去21,如图7所示,则剩余的砖对地面的 A .压力不变,压强减半 B .压力减半,压强减半 C .压力减半,压强不变 D .压力不变,压强不变 得分 评卷人三、作图题(每小题2分,共4分)17.根据图8中光通过透镜前后的方向,在图8的方框中填入适当类型的透镜.18.在图9中,O 为轻质杠杆的支点,请画出使杠杆保持平衡的最小的力F 的示意图以及力F 的力臂L .图6图7图8图9得分评卷人四、实验探究题(第19题6分,第20题6分,第21题6分,共18分)19.某兴趣小组的同学在探究“滑动摩擦力的大小与什么因素有关系”时,提出了以下几种猜想:A.与物体间接触面积的大小有关B.与物体受到的压力大小有关C.与物体运动速度有关D.与物体间接触面的粗糙程度有关为了验证以上猜想是否正确,小组利用如图10示装置进行了实验.实验中所用的木块完全相同,操作方法正确,实验过程及实验数据如下表所示.不同表面实验次数木块的放置方式木块的运动速度弹簧测力计的读数木块表面1 一个平放v 1.82 一个平放 1.5 v 1.83 一个侧放v 1.84 两个平叠放v 3.6木块上铺毛巾5 一个平放 1.5 v 2.46 两个平叠放v 4.8(1)由第1次和第2次实验,可验证猜想____________(填序号)是错误的.(2)由第1次和第3次实验,可得出的结论是:滑动摩擦力的大小与物体间接触面积的大小____________.(3)由第1次和第4次实验,可得出的结论是:接触面的粗糙程度一定时,压力越大,摩擦力越____________.(4)由第2次和第5次实验,可验证猜想____________ (填序号)是正确的.(5)用弹簧测力计拉着木块在木板上滑动时,每次都要保持匀速运动,这是因为____________________________________________________________.20.小明将一桶水从一楼提到四楼,小刚想测量一下小明对这桶水做功的功率.(1)小刚测量时需要的器材有:____________、____________、秒表.(2)小刚设计了以下测量步骤,下列哪些步骤是多余的( )A.测出小明走过的总路程s;B.测出一楼到四楼的垂直高度h;C.测出小明的体重m1;D.测出一桶水的总质量m2;E.测出小明上楼所用的时间t;F.计算出小明对这桶水做功的功率.(3)小明对这桶水做功的功率P=____________.(用(2)中测得的量表示)21.在“探究影响滑轮组机械效率的因素”实验中,某同学用如图11所示的同一滑轮组图10分别做了三次实验,实验数据记录如下:图11实验次数钩码重/N钩码上升的距离/cm弹簧测力计的读数/N弹簧测力计上升的距离/cm机械效率1 2 8 0.8 24 83.3%2 4 5 1.5 153 6 10 90.9%(1)在表中空格处填下适当的数据(机械效率用百分数表示,保留一位小数).(2)在实验操作中应竖直向上___________拉动弹簧测力计.(3)从实验数据分析得出:使用同一滑轮组,___________可以提高滑轮组的机械效率.(4)滑轮组的机械效率可能还与其它因素有关,请你作出恰当的猜想:滑轮组的机械效率与______________________________________有关(写出一种影响因素即可).得分评卷人五、综合应用题(第22题9分,第23题9分,共18分)22.“海宝”是2010年上海世博会的吉祥物,其形象如图12所示.在点缀上海街头的各种“海宝”中,有一座“海宝”(材质均匀、实心)的体积为2m3,密度为7.5×103kg/m3,与水平地面的接触面积为1m2,g取10N/kg.求:(1)该“海宝”所受重力大小G.(2)与该“海宝”所受的重力构成平衡力的是什么力?(3)该“海宝”对地面的压强P.(4)你认为该“海宝”对地面的压强__中学生站立时对地面的压强.(选填“大于”、“等于”或“小于”)23.甲、乙两人分别用不同的方法把重100N的物体A 从地面匀速提到三楼,如图13甲、乙所示.(1)甲用20s把物体A由M提到N,他对物体做功的功率多大?图12 图13(2)若乙图中人对绳的拉力为60N ,求拉力所做的总功为多大?(3)求乙图装置的机械效率.物理参考答案(北师大版)一、填空题(每空1分,共14分) 1.凸透 会聚 2.前 凹 3.形变 运动状态 4.漂浮 5.靠拢 小 6.大气压 增大压强 7.省力 208.冰壶投出后,为什么还能继续向前运动?(用毛刷在冰壶运行的前方用力来回擦刷冰面的目的是什么?……)二、选择题(每小题2分,共16分)三、作图题(每小题2分,共4分) 17.略(2分) 18.略(2分)四、实验探究题(第19题6分,第20题6分,第21题6分,共18分) 19.(1)C(1分) (2)无关(1分) (3)大(1分) (4)D(1分)(5)匀速时弹簧测力计的拉力与木块所受到的摩擦力大小相等(2分) 20.(1)刻度尺(或皮尺)(1分)、磅秤(或台秤)(1分)(2)AC(2分)(3)tghm 2(2分) 21.(1)表中填88.9%(1分) 2.2(1分) 30(1分)(2)匀速(1分) (3)增加物重(1分)(4)动滑轮重、绳与滑轮的摩擦等(1分)五、综合应用题(第22题9分,第23题9分,共18分)22.解:(1)该“海宝”所受的重力为G =mg =ρVg =7.5×103×2×10N =1.5×105N……3分 (2)地面对“海宝”的支持力 ……2分(3)该“海宝”对地面的压强为Pa 105.1Pa 1105.155⨯=⨯===S G S F P……3分(4)大于 ……1分23.解:(1)甲对物体A 做的功为W =F ·h =G ·h =100×6J =600J ……2分甲对物体A 做功的功率为P ==W 20600=t W =30W ……2分 (2)乙图中绳的拉力做的总功为W 总=Fs =60×6×2J =720J ……2分 (3)乙图装置的机械效率为η=J720J6100⨯==总总有用W Gh W W =83.3%……3分。

(人教版)河南省洛阳市2018-2019学年八年级第二学期期末考试英语试卷(扫描版)

(人教版)河南省洛阳市2018-2019学年八年级第二学期期末考试英语试卷(扫描版)

洛阳市2018-2019学年第二学期期末考试八年级英语试卷注意事项:n |n*1.本试卷分试题卷和答题卡两部分,试题卷共8页,满分120分,考试时间90 丁钟。

2. 试题卷上不要答题•请用0.5毫米黑色签字水笔直接把答案写在答題卡上:誉庄试题卷上的答案无效。

3. 答题前.考生务必将本人姓名、准考证号填写生答题卡第一面的指定位置上:一、听力理解(20小题,每小题1分,共20分)第一节听下面5段对话。

每段对话后有一个小题,从题中所给的A、B、C三今辽项中选出最佳答案,并在答题卡上将该项涂黑。

爭段对话读两遍。

1. What's wrong with Brain?A. His legs hurt.B. His eyes hurt.C. His arms hurt.2. Where does Tina volunteer?K- A. In a children's hospital. B. In an old people's home. C. At a food bank.3. Who are the two speakers?A. Neighbors.B. Old classmates.C. Teachers and students・4. When did Alex leave?s A. At 7:40pm. B. At 7:50pm. C. At 8:00pm・5. How does the man like the party?壬 A. Interesting. B. Boring. C. Noisy.第二节听下而几段对话或独白c毎投对话或粒白后有几个小题,从題中所给的A、B、C三个选顶中选出最佳答案,并在答题卡上将该项涂黑°每段对话或独白读两遍。

听下面一段对话,回答第6至第7两个小题。

6. Which book is Jenny looking for?A. Little Women.B. Robinson Crusoe・C. Little Red Riding Hood・7. What does the boy think of the girl in the book?A. Brave ・B. Careful.C. Silly.听下面一段独白,回答第8至第9两个小题。

2018-2019学年八年级物理下学期期末考试原创卷B卷河南河北湖北湖南广东(答题卡)

2018-2019学年八年级物理下学期期末考试原创卷B卷河南河北湖北湖南广东(答题卡)

(3)_________________ _________________
1
请在各题目的答题区域内作答,超出黑色矩形边框限定区域的答案无效! 请在各题目的答题区域内作答,超出黑色矩形边框限定区域的答案无效! 27.(5 分)
28.(5 分)
请在各题目的答题区域内作答,超出黑色矩形边框限定区域的答案无效! 2
24.(6 分,每空 2 分) (1)_________________
第Ⅱ卷(请在各试题的答题区内作答)
13.__________________ __________________ __________________(3 分) 14.__________________ __________________ _________________________(2 分) 16.__________________ __________________(2 分) 17.________________________ __________ ________________________(3 分) 18.__________________ __________________(2 分) 19.__________________ __________________(2 分) 20.__________________ __________________ __________________(3 分)
3.请按题号顺序在各题目的答题区域内作答, 超出区域书写的答案无效;在草稿纸、试题 卷上答题无效。
4.保持卡面清洁,不要折叠、不要弄破。
贴条形码区
考生禁填: 缺考标记 违纪标记
以上标记由监考人员用 2B 铅 笔填涂
选择题填涂样例: 正确填涂 错误填涂 [×] [√] [/]

2018-2019学年河南省名校大联考高二下学期期末考试历史试题(答案+解析)

2018-2019学年河南省名校大联考高二下学期期末考试历史试题(答案+解析)

河南省名校大联考2018-2019学年高二下学期期末考试试题考生注意:1.答题前,考生务必将自己的姓名、考生号填写在试卷和答题卡上,并将考生号条形码粘贴在答题卡上的指定位置。

2.回答选择题时,选出每小题答案后,用铅笔把答题卡对应题目的答案标号涂黑。

如需改动,用橡皮擦干净后,再选涂其他答案标号。

回答非选择题时,将答案写在答题卡上。

写在本试卷上无效。

3.考试结束后,将本试卷和答题卡一并交回。

一、选择题:本题共24小题,每小题2分,共48分。

在每小题给出的四个选项中,只有一项是符合题目要求的。

1.西周初期分封的诸侯,既有大小之别,又有周族姬姓和他族异姓不同,姬姓封国不仅数量众多,且多数大国分封在具有战略意义的要地。

这说明,周初分封A. 完全继承了商代地方管理体制B. 促进了社会等级秩序基本形成C. 强化了“家天下”的政治统治D. 加强了中央对地方的直接管辖【答案】C【解析】西周大量分封周族姬姓,分封到具有战略意义的要地,目的是了加强周朝的统治,拱卫王室,形成一姓之国,从而强化“家天下”的政治统治,答案为C。

周初分封制继承了商代的地方管理体制,但是“完全”过于绝对,A错误。

进入阶级社会后,就形成了社会等级秩序,B错误。

西周的分封制是被分封诸侯管理地方,而不是中央直接管辖,D错误。

2.春秋战国时期产生了大量与经济活动有关成语或俗语,如“挂牛头卖马肉”“自相矛盾”“买椟还珠”等。

这一现象反映出A. 各国对市场缺乏管理B. 私营工商业已经兴起C. 抑商政策走向了失败D. 官营工商业失去主导【答案】B【解析】从材料可以看出当时商品在集市上进行叫卖,供顾客选择,表明当时私营工商业兴起,答案为B。

材料没有反映市场管理,A错误。

重农抑商并不表示不允许工商业存在,C 错误。

官营工商业失去主导要到明朝,与材料时间不符,D错误。

3.自汉武帝时期开始,研习儒家著作成为新时尚,就连汉昭帝也自称通《孝经》《论语》和《尚书》等典籍。

河南省2018-2019学年八年级下学期教学质量检测(二)数学试题(含答案解析)

河南省2018-2019学年八年级下学期教学质量检测(二)数学试题(含答案解析)
A. B.10cmC.20cmD.12cm
10.如图,在菱形 中, ,对角线 与 相交于点 ,且 , 于点 ,则 的长是()
A.4B. C.5D.
二、填空题
11.已知点 , 是一次函数 图象上的两个点,则 _____ (填“>”或“<”“=”)
12.小明做了一个平行四边形的纸板,但他不确定纸板形状是否标准,小聪用刻度尺量了这个四边形的四条边长,然后说这个纸板是标准的平行四边形,小聪的依据是_____.
(1)下列分式:① ;② ;③ ;④ .其中是“和谐分式”是(填写序号即可);
(2)若a为正整数,且 为“和谐分式”,请写出a的值;
(3)在化简 时,
小东和小强分别进行了如下三步变形:
小东:原式= = = ,
小强:原式= = ,
显然,小强利用了其中的和谐分式,第三步所得结果比小东的结果简单,原因是:,
2.已知一次函数y=kx+3(k≠0)的图象经过点A,且函数值y随x的增大而增大,则点A的坐标可能是( )
A.(﹣2,﹣4)B.(1,2)C.(﹣2,4)D.(2,﹣1)
3.点(2,﹣4)在反比例函数y= 的图象上,则下列各点在此函数图象上的是( )
A.(2,4)B.(﹣1,﹣8)C.(﹣2,﹣4)D.(4,﹣2)
三、解答题
16.学校新到一批理、化、生实验器材需要整理,若实验管理员彭老师一人单独整理需要1小时完成。现在彭老师与工人王师傅共同整理30分钟后,彭老师因事外出,王师傅再单独整理了30分钟才完成任务。问王师傅单独整理这批实验器材需要多少分钟完成.
17.如果一个分式的分子或分母可以因式分解,且这个分式不可约分,那么我们称这个分式为“和谐分式”.
(1)求反比例函数的解析式和点E的坐标;

河南工程学院期末电机考试卷

河南工程学院期末电机考试卷

一.选择题1.一台正常工作为三角形联接的交流电动机,起动时改为星形联接,则起动电流为三角形联接时起动线电流的A.31倍 B.3倍 C.31倍2、直流发电机电刷在几何中性线上,如果磁路不饱和,这时电枢反应是() A. 去磁 B.助磁 C.不去磁也不助磁13、他励直流电动机,当降低其励磁电流时,转速( ) A .减小 B .增加 C .不变 D .不确定3、他励直流电动机,当降低其励磁电流时,转速( ) A .减小 B .增加 C .不变 D .不确定4、一台他励直流发电机由额定运行状态转速下降到原来的70%,而励磁电流、电枢电流都不变,则( )A .Ea 下降到原来的70%B .T 下降到原来的70%5、根据直流电动机的机械特性方程式,得到固有机械特性曲线,其理想空载转速为n 0,当降低电源电压时,得到一人为机械特性曲线,其理想空载转速为0n ',则( )A. 'n 0<n 0,特性硬度降低B. 'n 0<n 0,特性硬度不变 C .'n 0=n 0,特性硬度降低 D .'n 0>n 0,特性硬度降低 6、一台直流发电机,电刷位于几何中性线上,如果磁路不饱和,这时的电枢反应对磁场的影响是( )A .去磁B .増磁C .不去磁也不増磁7、某三相电力变压器的N S =500kV A ,N N U U 21/=10000/400V ,Y ,yn 接法,下面数据中有一个是它的励磁电流值,它应该是( )A .28.78AB .50AC .2AD .10A8、当拖动负载逆时针旋转时,直流电动机电磁转矩为逆时针方向100N ·m ,负载转矩为顺时针方向120 N ·m ,该电机运行于( )。

A .电动状态,转速正在增大 B .电动状态,转速不变 C .电动状态,转速正在减小 D .制动状态,转速正在减小 E .制动状态,转速正在增大9、直流发电机中换向器的作用是( )A .把电枢绕组的直流电势变成电刷间的交流电势B .把电枢绕组的交流电势变成电刷间的直流电势C .把电枢绕组的直流电势变成电刷间的直流电势D .把电枢绕组的交流电势变成电刷间的交流电势10、一台他励直流发电机由额定运行状态转速下降到原来的70%,而励磁电流、电枢电流都不变,则( )A .Ea 下降到原来的60%B .T 下降到原来的60%C .Ea 和T 都下降到原来的60%D .端电压下降到原来60%11.一台单相变压器,其它条件不变,只沿铁芯截面开一条缝,主磁通将会 A.变大 B.基本不变 C.变小12. 并励直流发电机的转速提高10%时,其空载电压将升高( )A.10%B.>10%C.<10%13.变压器的空载损耗( )A.全部为铁耗B.全部为铜耗C.主要为铁耗14.变压器副边绕组开路,原边电压因故升高时,变压器铁心中产生的铁损耗将( ) A.不变 B.增大 C.减小15.转子绕组串电阻起动适用于( )。

河南工学院2018―2019学年第二学期期末考试[001]

河南工学院2018―2019学年第二学期期末考试[001]

河南工学院2018―2019学年第二学期期末考试《××××××××》(本科)×卷命题教师: ××适用班级: ××××××××考试方式: 闭卷考试时间:××分钟课程承担单位:××教研室试卷总分:分1.连续信号)t f 的占有频带为0~10 kHz,均匀抽样后,构成一离散的时间信号。

为了保证能够从离散时间信号恢复原信号()t f ,则抽样周期的值最大不得超过( )。

A .410- S B. 510- S C. 5 ×510- S D. 5×410- S 2.试卷模板使用说明一、单项选择题(共10小题,每小题 2 分,共 20 分)1.必须在试卷的《》处填入课程名称。

(课程名称必须填培养方案中规定的名称,不允许填写教材名称)2 “×卷”此处填写试卷类型A、B3.考试方式为开卷、闭卷、机试;如为开卷,请注明允许携带资料范围。

4.试卷内容部分字体为黑色宋体、小四号、加粗。

行距为固定值20磅。

5.试卷填写完毕,无用的部分应删除。

6.编辑好试卷后另存为Word文档类型,请不要以文档模板类型保存。

7.题型根据出卷需要可修改。

二、填空题(共10小题,每空2分,共 20 分)1.当外加激励为零时,仅由系统的初始状态所引起的响应称为。

2.用傅里叶级数的三角形式分解周期信号时,若信号为偶函数,则a、n b中一定不存在___________ 。

n3.1.集装箱作为一种大型标准化运输设备,推动了货物包装标准化。

( )2.在我国境内,除IAA 、IA 、IAX 、ICC 、IC 和ICX 6种国际标准集装箱外,我国还规定了5D 和10D 两种箱型,主要用于国内运输。

( )1.已知某线性时不变系统的微分方程为()()()()224366d y t dy t df t y t dt dt dt++= 已知()().00,10'==--y y 试求该系统的零输入响应。

2018-2019学年河南省顶级名校高二下学期期末考试政治试题Word版含答案

2018-2019学年河南省顶级名校高二下学期期末考试政治试题Word版含答案

2018-2019学年下期期末高二政治试题考试时间:60 分钟 试卷分值:100 分 考查内容: 必修一1—4课第1卷(选择题,共60分)一、选择题(在下列各题的四个选项中,只有一项是最符合题目要求的。

每小题3分,共60分)1 . 2018年智能无线路由器火了!百度、360、盛大、腾讯等巨头“按耐不住”了,看中了智能无线路由器广大的市场,加入了与老牌商家的竞争,纷纷开发功能更多、质量更好的无线路由器。

厂家的举措是因为A .优质优价,商品质量决定商品价格B .提高商品质量,才能满足消费者的需求C .商品是使用价值和价值的统一体D .提高技术,才能形成自己的竞争优势2 . "金性不败朽,故为万物宝”,正因为如此,在长期的商品交换过程中,金银逐渐固定地充当了一般等价物,成为各国普遍接受的货币。

下列说法正确的是 ①金银具有最适合充当一般等价物的特性 ②在商品交换中,等价物总是固定在金银上 ③货币是商品交换发展到一定阶段的产物 ④因为各国普遍接受金银,所以产生了货币 A .①② B .①③ C .②④ D .③④3.进入2019年,人民币对美元汇率接连走强。

在其他条件不变的情况下,下列对汇率这一变化及其影响描述正确的是A .①B .②C .③D .④4.某国去年国民经济总体上是平衡的,货币供应量为6万亿元,货币流通次数为5次。

假如今年该国待售商品增加30%,货币流通速度提高20%。

在其他条件不变的情况下,国民经济要保持平衡,则流通中所需要的货币量为A .6.5万亿元B .8万亿元C .9万亿元D .5万亿元 5 . 移动支付就是允许用户使用其移动终端(通常是手机)对所消费的商品或服务进行账务支付的一种服务方式。

使用移动支付正逐渐成为一种习惯。

移动支付的普及应用可以 ①增加货币的基本职能 ②减少流通中的货币量 ③降低货币的流通成本 ④使支付更加快捷高效 A .①② B .①③ C .②④ D .③④6. 如图为某商场同一时期甲乙两种关联商品的销量变化示意图,(LL1为甲商品,WW1为乙商品)下列判断中对这种变化解读正确的是A .甲乙是互补商品,如果甲商品社会劳动生产率提高,MM1会向下移B .甲乙是互补商品,如果甲商品个别劳动生产率提高,MM1会向上移C .甲乙互为替代品,如果乙商品社会必要劳动时间减少,LL1会向上移D .甲乙互为替代品,如果乙商品社会必要劳动时间减少,LL1会向下移7 . 加强供给侧改革,必须需求与供给“两条腿走路”。

  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。

河南工学院2018―2019学年第二学期期末考试
《××××××××》(专科)×卷
命题教师:
×× 适用班级: ×××××××× 考试方式: 闭卷 考试时间: ××分钟
课程承担单位: ××教研室 试卷总分:

1.连续信号t f 的占有频带为0~10 kHz,均匀抽样后,构成一离散的时间信号。

为了保证能够从离散时间信号恢复原信号()t f ,则抽样周期的值最大不得超过( )。

A .410- S B. 510- S C. 5 ×510- S D. 5×410- S 2.
试卷模板使用说明
1.必须在试卷的《 》处填入课程名称。

(课程名称必须填培养方案中规定的名称,不允许填写教材名称)
2 “ ×卷 ” 此处填写试卷类型A 、B 、C
3.考试方式为开卷、闭卷、机试;如为开卷,请注明允许携带资料范围。

4.试卷内容部分字体为黑色宋体、小四号、加粗。

行距为固定值20磅。

5.试卷填写完毕,无用的部分应删除。

6.编辑好试卷后另存为Word 文档类型,请不要以文档模板类型保存。

7.题型根据出卷需要可修改。

一、单项选择题(共10小题,每小题 2 分,共 20 分)
1.当外加激励为零时,仅由系统的初始状态所引起的响应称为 。

2.用傅里叶级数的三角形式分解周期信号时,若信号为偶函数,则n a 、n b 中一定不存在___________ 。

3.
1.集装箱作为一种大型标准化运输设备,推动了货物包装标准化。

( )
2.在我国境内,除IAA 、IA 、IAX 、ICC 、IC 和ICX 6种国际标准集装箱外,我国还规定了5D 和10D 两种箱型,主要用于国内运输。

( )
二、填空题(共10小题,每空2分,共 20 分)
三、判断题(共10小题,每小题2分,共 20 分)
1.已知某线性时不变系统的微分方程为
()()()()224366d y t dy t df t y t dt dt
dt ++= 已知()().00,10'==--y y 试求该系统的零输入响应。

2.
四、简答题(共6小题,每小题 5 分,共 30 分)
1.已知某系统的差分方程为()()()()()3621218y k y k y k y k k ε++++++= 已知初始值y(1)=1,y(2)=2,y(3)=-23求该系统的零输入响应y(k)。

2.
五、计算分析题(第1小题 12分,第2小题18分,共30分)。

相关文档
最新文档