第三套试题
中国传统文化的概论第三套习题
第三套习题试题一、填空类1.文化是人类______和______的总和。
2.一种将民族成员、民族历史结合起来,不使分散和中断的能力,叫做传统的____。
3.______是人类有意识地利用自然创造出来的景观。
4.中国拥有辽阔国土的原因主要有__________、__________、________、__________,等等。
5.华夏文化圈是以______为精神支柱,以___为图腾;鸟夷文化圈则是以______为精神支柱,以___为图腾。
6.中国文化的开放性,在汉以前主要表现在__________上,汉以后,则表现在__________上。
7.______是宗族对中国古代政治的影响。
8.古近代世界的政体主要有三种形式, 即____政体、____政体和____政体。
9.中国古代政治体制从秦代开始,进入______时期。
10.中国第一部哲学著作是____。
11.无论是中国还是古希腊,在哲学的兴起期,已经开始接触到自然、人、和思维的形式问题,初步形成______、______、______三大哲学领域。
12.中国著名的人性论有孟子的________,荀子的____和董仲舒的_______。
13.社会论是_______________________。
(哲)14.依照中国传统观念,相对的双方中,有一方起____作用,其与另一方只是____关系,而不是起____对方的作用。
15.春秋战国诸子百家中,儒家和____在当时最著名,被时人称为“____”16.中国古代较为全面概括系统思想的观念是“____”17.人为宗教有“三宝”,即____、____和______。
18. ______是指专门展开史学批评和史学理论研究的一种史书体裁。
19学案体史籍是______________________。
20. 中国传统艺术中的“意”表现为_______、______和_______。
21. ______指的是表现为整体(系统)模式的文化特征。
安全技术试题 第3套
安全技术试题第三套一、单选1. 从防止触电的角度来说,绝缘、屏护和间距是防止______的安全措施。
A.电磁场伤害B.间接接触电击C.静电电击D.直接接触电击2. 对产生尘、毒危害较大的工艺、作业和施工过程,应采取有效的密闭、、吸收、净化等综合措施和监测装置,防止尘、毒的泄漏、扩散和溢出。
A.高压B.中压C.零压D.负压3. 引发火灾的点火源,其实质是下列哪一项。
A.助燃B.提供初始能量C.加剧反应D.延长燃烧时间4. 在输电线特别是在高压线附近工作的起重机各部分与输电线的最小距离,当输电线路电压在1kV以上时,应大于。
A.1mB.1.5 mC.2 mD.3 m5. 在高层建筑生活、工作的人员利用客运电梯可快捷、方便达到目的楼层。
发生地震、火灾时,使用客运电梯逃生。
A.应该优先选择B.绝对禁止C.选择方案之一是D.可以但最好不6. 汽车起重机可以在马路上行驶,又能进行起重作业,兼有汽车和起重机两种功能。
汽车起重机的司机持有,就可以独立进行汽车起重机的各种作业。
A.汽车驾驶证B.起重机司机证C.汽车驾驶证和起重机司机证D.经过汽车驾驶和起重机培训的证明材料7. 安全带是进行机械高处作业人员预防坠落伤亡的个体防护用品,安全带的正确使用方法是。
A.低挂高用B.高挂低用C.水平挂用D.钩挂牢靠,挂位不受限制8. 在需要设置安全防护装置的危险点,使用安全信息安全防护装置。
A.可以代替设置B.没必要设置C.不能代替设置D.可以设置也可以不设置9. 装设避雷针、避雷线、避雷网、避雷带都是防护______的主要措施。
A.雷电侵入波B.直击雷C.反击D.二次放电10. 可燃固体根据______分类。
A.自燃点B.着火点C.闪点D.爆炸下限11. 易燃液体应盛装在______。
A.玻璃容器B.瓷器C.具有防腐功能的金属容器D.塑料容器12. 任何场所的防火通道内,都要装置______。
A.防火标语及海报B.出路指示灯及照明设备C.消防头盔和防火服装D.灭火器材13. 永久气体气瓶属于:气瓶A.低压B.中压C.高压D.常压14. 按照产生的原因和性质,爆炸可分为______。
第3套试题听力原文
第3套试题听力原文第三套试题听力原文Part II Listening ComprehensionSection ADirections: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A), B), C) and D), and decide which is the best answer. Then mark the corresponding letter on Answer Sheet1 with a single line through the centre.l. M: My back has been aching ever since I started playing tennis on the weekends.W: Haven’t you had that checked out yet?Q: What does the woman imply?A) Tennis players often injure their backs.B) She hadn’t heard about the man’s problem.C) The man should have seen the doctor.D) She’ll check the man’s schedule as soon as possible.[答案] C).听前预测根据选项关键词injure, doctor等推测问题与受伤及看医生有关。
2024年6月第3套英语六级真题
大学英语六级考试2024年6月真题(第三套)Part I Writing (30 minutes) Directions:For this part,you are allowed 30 minutes to write an essay that begins with the sentence“Nowadays cultivating independent learning ability is be coming increasingly crucial for personal development.”You can make comments,cite examples or use your personal experiences to develop your essay.You should write at least 150 words but no more than 200 words.You should copy the sentence given in quotes at thebeginning of your essay.Part II Listening Comprehension (30 minutes)特别说明:由于多题多卷,官方第三套真题的听力试题与第一套真题的一致,只是选项顺序不同,因此,本套试卷不再提供听力部分。
Part III Reading Comprehension (40 minutes) Section ADirections: In this section,there is a passage with ten blanks.You are required to select one word for each blank from a list of choices given in a word bank following the passage.Read the passage through carefully before making your choices.Each choice in the bank is identified by a letter.Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre.You may not use anyof the words in the bank more than onceA rainbow is a multi-colored,arc-shaped phenomenon that can appear in the sky.The colors of a rainbow are produced by the reflection and 26 _of light through water droplets( 小滴)present in the atmosphere.An observer may 27 _a rainbow to be located either near or far away,but this phenomenon is not actually located at any specific spot.Instead,the appearance of a rainbow depends entirely upon the position of the observer in 28 to the direction of light.In essence,a rainbow is an 29 illusion.Rainbows present a 30 made up of seven colors in a specific order.In fact,school children in many English-speaking countries are taught to remember the name“Roy G.Biv”as an aid for remembering the colors of a rainbow and their order.“Roy G.Biv” 31 f or:red,orange,yellow,green,blue,indigo,and violet.The outer edge of the rainbow arc is red,while the inner edge is violet.A rainbow is formed when light (generally sunlight)passes through water droplets 32 in the atmosphere. The light waves change direction as they pass through the water droplets,resulting in two processes:reflction and refraction ( 折射 ) .When light reflects off a water droplet,it simply 33_back in the opposite direction from where it 34 .When light refracts,it takes a different direction.Some individuals refer to refracted light as “bent light waves.”A rainbow is formed because white light enters the water droplet,where it bends in several different directions.When these bent light waves reach the other side of thewater droplet,they reflect back out of thedroplet instead of 35 passing through the water.Since the white light is separated inside of the water,the refracted light appears as separate colors to the human eye.Section BDirections: In this section,you are going to read a passage with ten statements attached to it.Each statement contains information given in one of theparagraphs.Identify the paragraphfrom which the information is derived.You may choose a paragraph more than once.Each paragraph is marked with a letter.Answer the questions by marking the corresponding letteronAnswer Sheet 2.Blame your worthless workdays on meeting recovery syndromeA)Phyllis Hartman knows what it's like to make one's way through the depths of office meeting hell.Managersat one of her former human resources jobs arranged so many meetings that attendees would fall asleep at the table or intentionally arrive late.With hours of her day blocked up with unnecessary meetings,she was often forced to make up herwork during overtime.“I was actually working more hoursthan I probably would have needed to get the work done,”says Hartman,who is founder and president of PGHR Consulting in Pittsburgh, PennsylvaniaB)She isn't alone in her frustration.Between 11 million and 55 million meetings are held each day in the UnitedStates,costing most organisations between 7%and 15%of their personnel budgets.Every week,employees spend about six hours in meetings,while the average manager meets for a staggering 23 hours.C)And though experts agree that traditional meetings are essential for making certain decisions and developingstrategy,some employees view them as one of the most unnecessary parts of the workday.The result is not only hundreds of billions of wasted dollars,but an annoyance of what organisational psychologists call “meeting recovery syndrome (MRS)”:time spent cooling off and regaining focus after a useless meeting.If you run to the office kitchen to get some relief with colleagues after a frustrating meeting,you're likely experiencing meeting recovery syndrome.D)Meeting recovery syndrome is a concept that should be familiar to almost anyone who has held a formaljob.It isn't ground-breaking to say workers feel fatigued after a meeting,but only in recent decades have scientists deemed the condition worthy of further investigation.With its links to organisational efficiency and employee wellbeing,MRS has atracted the attention of psychologists aware of the need to understand its precise causes and curesE)Today,in so far as researchers can hypothesise,MRS is most easily understood as a slow renewal of finitemental and physical resources.When an employee sits through an ineffective meeting their brain power is essentially being drained away.Meetings drain vitality if they last too long,fail to engage employees or turn into one-sided lectures.The conservation of resources theory,originally proposed in 1989 by Dr Stevan Hobfoll,states that psychological stress occurs when a person's resources are threatened or lost.When resources are low,a person will shift into defence to conserve their remaining supply.In the case of office meetings,where some of employees'most valuable resources are their focus,alertness and motivation,this can mean an abrupt halt in productivity as they take time to recover.F)As humans,when we transition from one task to another on the job—say from sitting in a meeting todoing normal work—it takes an effortful cognitive switch.We must detach ourselves from the previous task and expend significant mental energy to move on.If we are already drained to dangerous levels, then making the mental switch to the next thing is extra tough.It's common to see people cyber-loafing after a frustrating meeting,going and getting coffee,interrupting a colleague and telling them about the meeting,and so on.G)Each person's ability to recover from horrible meetings is different.Some can bounce back quickly,whileothers carry their fatigue until the end of the workday.Yet while no formal MRS studies are currently underway,one can loosely speculate on the length of an average employee's lag time.Switching tasks in a non-MRS condition takes about 10 to 15 minutes.With MRS,it may take as long as 45 minutes on average It's even worse when a worker has several meetings that are separated by 30 minutes.“Not enough time to transition in a non-MRS situation to get anything done,and in an MRS situation,not quite enough time torecover for the next meeting,”says researcher Joseph Allen.“Then,add the compounding of back-to-back bad meetings and we may have an epidemic on our hands.”H)In an effort to combat the side effects of MRS,Allen,along with researcher Joseph Mroz and colleagues at theUniversity of Nebraska-Omaha,published a study detailing the best ways to avoid common traps,including a concise checklist of do's and don'ts applicable to any workplace.Drawing from around 200 papers to compile their comprehensive list,Mroz and his team may now hold a remedy to the largely undefined problem of MRS.I)Mroz says a good place to startis asking ourselves ifour meetings are even necessary in the first place.If allthat's on the agenda is a quick catch-up,or some non-urgent information sharing,it may better suit the group to send around an email instead.“The second thing I would always recommend is keep the meeting as small as possible,”says Mroz.“If they don't actually have some kind ofimmediate input,then they can follow up later.They don't need to be sitting in this hour-long meeting.”Less time in meetingswould ultimately lead to more employee engagement in the meetings theydo attend,which experts agree is a proven remedy for MRS.J)Employees also feel taxed when they are invited together to meetings that don't inspire participation,says Cliff Scott,professor of organisational science.It takes precious time for them to vent their emotions, complain and try to regain focus after a pointless meeting—one of the main traps of MRS.Over time as employees find themselves tied up in more and moreunnecessary meetings—and thus dealing with increasing lag times from MRS—the waste of workday hours can feel insulting.K)Despite the relative scarcity of research behind the subject,Hartman has taught herself many of the same tricks suggested in Mroz's study,and has come a long way since her days ofbeing stuck with unnecessary meetings.The people she invites to meetings today include not just the essential employees,but also representatives from every department that might have a stake in the issue at hand.Managers like her,who seek input even from non-experts to shape their decisions,can find greater support and cooperation from their workforce,she says.L)If an organisation were to apply all 22 suggestions from Mroz and Allen's findings,the most noticeable difference would be a stark decrease in the total number of meetings on the schedule,Mroz says.Less time in meetings would ultimately lead to increased productivity,which is the ultimate objective of convening a meeting.While none of the counter-MRS ideas have been tested empirically yet,Allen says one trick with promise is for employees to identify things that quickly change their mood from negative to positive.As simple as it sounds,finding a personal happy place,going there and then coming straight back to work might be key to facilitating recovery.M)Leaders should see also themselves as “stewards of everyone else's valuable time”,adds Steven Rogelberg, author of The Surprising Science of M eetings.Having the skills to foresee potential trapsand treat employees' endurance with care allows leaders to provide effective short-term deterrents to MRS.N)Most important,however,is for organisations to awaken to the concept of meetings being flexible,says Allen.By reshaping the way they prioritise employees'time,companies can eliminate the very sources of MRS in their tracks36.Although employees are said to be fatigued by meetings,the condition has not been considered worthy offurther research until recently.37.Mroz and his team compiled a list of what to do and what not to do to remedy the problem of MRSpanies can get rid of the root cause ofMRS if they give priority to workers'time.39.If workers are exhausted to a dangerous degree,it is extremely hard for them totransition to the next task.40.Employees in America spend a lot of time attending meetings while the number of hours managers meet isseveral times more.41.Phyllis Hartman has learned by herselfmany of the ways Mroz suggested in his study and made remarkablesuccess in freeing herself from unnecessary meetings.42.When meetings continue too long or don't engage employees,they deplete vitality.43.When the time of meetings is reduced,employees will be more engaged in the meetings they do participate in.44.Some employees considermeetings one of the most dispensable parts of the workday.45.According to Mroz,if all his suggestions were applied,a very obvious change would be a steep decrease inthe number of meetings scheduled.Section CDirections: There are 2 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 and mark the corresponding letter on Answer Sheet 2 with asingle line through the centre.Passage OneQuestions 46 to 50 are based on the followingpassageSarcasm andjazzhave something surprisingly in common:You know them when you hear them.Sarcasm is mostly understood through tone of voice,which is used to portray the opposite of the literal words.For example, when someone says,“Well,tha t's exactly what I need right now,”their tone can tell you it's not what they need at all.Most frequently,sarcasm highlights an irritation or is,quite simply,meanIf you want to be happier and improve your relationships,cut out sarcasm.Why?Because sarcasm is actually hostility disguised as humor.Despite smiling outwardly,many people who receive sarcastic comments feel put down and often think the sarcastic person is rude,or contemptible.Indeed,it's not surprising that the origin of the word sarcasm derives from the Greek word“sarkazein”which literally means “to tear or strip the flesh off.”Hence,it's no wonder that sarcasm is often preceded by the word“cutting”and that it hurts.What's more,since actions strongly determine thoughts and feelings,when a person consistently acts sarcastically it may only serve to heighten their underlying hostility and insecurity.After all,when you come right down to it,sarcasm can be used as a subtle form of bullying—and most bullies are angry,insecure,or cowardly.Alternatively,when a person stops voicing negative comments,especially sarcastic ones,they may soon start to feel happier and more self-confident.Also,other people in their life benefit even more because they no longer have to hear the emotionally hurtful language of sarcasm.Now,I'm not saying all sarcasm is bad.Itmay just be betterused sparingly—like a potent spice in cooking. Too much of the spice,and the dish will be overwhelmed by it.Similarly,an occasional dash of sarcastic wit can spice up a chat and add an element ofhumor to it.But a big or steady serving of sarcasm will overwhelm the emotional flavor of any conversation and can taste very bitter to its recipient.So,tone down the sarcasm and work on clever wit instead,which is usually without any hostility and thus more appreciated by those you're communicating with.In essence,sarcasm is easy while true,harmless wit takes talent.Thus,the main difference between wit and sarcasm is that,as already stated,sarcasm is often hostility disguised as humor.It can be intended to hurt and is often bitter and biting.Witty statements are usually in response to someone's unhelpful remarks or behaviors,and the intent is to untangle and clarify the issue by emphasizing its absurdities.Sarcastic statements are expressed in a cutting manner;witty remarks are delivered with undisguised and harmless humor.46.Why does the author say sarcasm and jazz have something surprisingly in common?A)Both are recognized when heard. C)Both mean the opposite of what they appear to.B)Both have exactly the same tone. D)Both have hidden in them an evident irritation47.How do many p eople feel when they hear sarcastic comments?A)They feel hostile towards the sarcastic person. C)They feel a strong urge to retaliate.B)They feel belittled and disrespected. D)They feel incapable of disguising their irritation.48.What happens when a person consistently acts sarcastically?A)They feel their dignity greatly heightened.B)They feel increasingly insecure and hostile.C)They endure hostility under the disguise of humorD)They taste bitterness even in pleasant interactions49.What does the author say about people quitting sarcastic comments?A)It makes others happier and more self-confidentB)It restrains them from being irritating and bullying.C)It benefits not only themselves but also those around them.D)It shields them from negative comments and outright hostility.50.What is the chief difference between a speaker's wit and sarcasm?A)Their clarity. C)Their emphasis.B)Their appreciation D)Their intention.Passage TwoQuestions 51 to 55 are based on the following passage.Variability is crucially important for learning new skills.Consider learning how to serve in tennis.Should you always practise serving from the exactly same location on the court,aiming at the same spot?Although practising in more variable conditions will be slower at first,it will likely make you a better tennis player in the end.This is because variability leads to better generalisation of what is learned.This principle is found in many domains,including speech perception and learning categories.For instance, infants will struggle to learn the category“dog”if they are only exposed to Chihuahuas,instead of many different kinds of dogs“There are over ten different names for this basic principle,”says Limor Raviv,the senior investigator of a recent study.“Learning from less variable input is often fast,but may fail to generalise to new stimuli.”To identify key patterns and understand the underlying principles of variability effects,Raviv and her colleagues reviewed over 150 studies on variability and generalisation across fields,including computer science, linguistics,categorisation,visual perception and formal education.The researchers discovered that,across studies,the term variability can refer to at least four different kinds of variability,such as set size and scheduling.“The se four kinds of variability have never been directly compared—which means that we currently don't know which is most effective forlearning,”says Raviv.The impact of variability depends on whether it is relevant to the task or not.But according to the ‘Mr. Miyagiprinciple',practising seemingly unrelated skills may actuallybenefit learningof other skills.But why does variability impact learning and generalisation?One theory is that more variable input can highlight which aspects of atask are relevant and which are not.Another theory is that greater variability leads to broader generalisations.This is because variability will represent therealworld better,including atypical(非典型的)examplesA third reason has to do with the way memory works:when training is variable,learners are forced to actively reconstruct their memories“Understanding the impact of variability is important for literally every aspect ofour daily life.Beyond affecting the way we learn language,motor skills,and categories,it even has an impact on our social lives,”explains Raviv.“For example,face recognition is affected by whether people grew up in a small community or in a larger community.Exposure to fewer faces during childhood is associated with diminished face memory.”“We hope this work will spark people's curiosity and generate more work on the topi c,”concludes Raviv. “Our paper raises a lot of open questions.Can we find similar effects ofvariability beyond the brain,for instance, in the immune system?”51.What does the passage say about infants learning the category “dog”if they are exposed to Chihuahuas only?A)They will encounter some degree of difficulty.B)They will try to categorise other objects firstC)They will prefer Chihuahuas to other dog species.D)They will imagine Chihuahuas in various conditions52.What does Raviv say about the four different kinds ofvariability?A)Which of them is most relevant to the task at hand is to be confirmed.B)Why they have an impact on learning is far from being understood.C)Why they have neverbeen directly compared remains a mysteryD)Which of them is most conducive to learning is yet to be identified.53.How does one of the theories explain the importance of variability for learning new skills?A)Learners regard variable training as typical of what happens in the real world.B)Learners receiving variable training are compelled to reorganise their memories.C)Learners pay attention to the relevant aspects of a task and ignore those irrelevant.D)Learners focus on related skills instead of wasting time and effort on unrelated ones.54.What does the passage say about face recognition?A)People growing up in a small community may find it easy to remember familiar faces.B)Face recognition has a significant impact on literally every aspect of our social lives.C)People growing up in a large community can readily recognise any individual faces.D)The size of the community people grow up in impacts their face recognition ability.55.What does Raviv hope to do with their research work?A)Highlight which aspects of a task are relevant and which are not to learning a skill.B)Use the principle of variability in teaching seemingly unrelated skills in education.C)Arouse people's interest in variability and stimulate more research on the topic.D)Apply the principle of variability to such fields of study as the immune system.Part IV Translation(30 minutes) Directions: For this part,you are allowed 30 minutes to translate a passage from Chinese into English.You should write youransweron AnswerSheet 2.扇子自古以来就深受中国人喜爱,但现在已不只是消暑纳凉的工具,而更多地作为艺术品供人欣赏。
2024河北省医师定期考核第三套临床试题
精品课程第3套1、磺酰脲类降糖作用主要机制是A、抑制膜高血糖素分泌B、提高靶细胞对胰岛素的敏感性C、增加靶细胞膜上胰岛素受体数目D、阻滞ATP敏感钾通道,触发胰岛素释放E、降低食物吸收和糖原异生正确答案:D答案解析:磺酰脲类的降血糖作用机理可分胰内胰外两部分:1.对胰岛β细胞的作用:已知SU 在发挥对胰岛β细胞的作用时,必须先与β细胞表面的SU受体相结合,然后与β细胞表面的ATP敏感钾通道藕联,使此通道关闭,细胞膜去极化,从而释放胰岛素。
2.胰外作用:SU可以促进肝糖原合成,减少肝糖的产生,并能减缓肝脏葡萄糖向血液中的释放速率。
同时,SU 可使周围组织对葡萄糖的摄取、利用增加,并可增加细胞膜上胰岛素受体的数量,从而使机体的胰岛素敏感性增加。
故本题选D。
2、结核菌素试验阳性反应的原理是A、局部炎症反应B、抗原抗体复合物反应C、速发型(型)变态反应D、迟发型变态反应E、细胞溶解反应(II型)正确答案:D答案解析:结核菌素试验属于IV型超敏反应,即迟发型变态反应。
3、引起|型呼吸衰竭常见的疾病是A、慢性支气管炎B、阻塞性肺气肿C、气管异物D、膈肌麻痹E、ARDS正确答案:E答案解析:型呼吸衰竭:缺氧不伴二氧化碳潴留,甚至可因低氧血症代偿性通气增加,二氧化碳排出过多而导致PaCO2降低。
I型呼表常由于肺换气功能障碍所致,见于肺炎、重度肺结核、肺气肿、弥漫性肺间质纤维化、肺水肿、急性呼吸窘综合征(ARDS)等。
4、治疗急性白血病的药物中,易引起凝血因子减少的是A、阿糖胞苷B、长春新碱C、柔红霉素D、左旋门冬酰胺酶E、足叶乙甙正确答案:D答案解析:L-AsP(左旋门冬酰胺酶)主要影响蛋白质的合成而引起蛋白质成分的凝血因子减少,从而引起凝血功能障碍,且对纤维蛋白原的合成影响更为显著。
5、下述“家族性结肠息肉病”的临床特点,哪项正确A、罕有恶变B、青年发病C、好发于直肠D、常染色体隐性遗传E、常因腹部绞痛就诊正确答案:B答案解析:家族性结肠息肉病在肠道尤其是大肠广泛出现十到数百个大小不一的息肉,严重者可从口腔一直到直肠肛管均可发生息肉,且常伴其他特殊临床征状。
有机化学考试试题(第三套)
有机化学考试试题(第三套)1. 1-甲基-4-异丙基环己烷有几种异构体? A (A) 2种 (B) 3种 (C) 4种 (D) 5种2.某烯烃经臭氧化和还原水解后只得 CH 3COCH 3,该烯烃为: C (A) (CH 3)2C=CHCH 3 (B) CH 3CH=CH 2 (C) (CH 3)2C=C(CH 3)2 (D) (CH 3)2C=CH 23.下列哪个化合物能生成稳定的格氏试剂? B (A) CH 3CHClCH 2OH (B) CH 3CH 2CH 2Br (C) HC ≡CCH 2Cl (D) CH 3CONHCH 2CH 2Cl 4.下列化合物HOH(I),CH 3OH(II),(CH 3)2CHOH(III),(CH 3)3COH(IV)的酸性大小顺序是: A(A) I>II>III>IV (B) I>III>II>IV (C) I>II>IV>III (D) I>IV>II>III5.分子式为C 5H 10的开链烯烃异构体数目应为: C (A) 5种 (B) 4种 (C) 6种 (D) 7种6.判断下述四种联苯取代物中哪个是手性分子: A7.哪一种化合物不能用于干燥甲醇? A (A) 无水氯化钙 (B) 氧化钙 (C) 甲醇镁 (D) 无水硫酸钠8.C 3H 6O 有几种稳定的同分异构体? D (A) 3种 (B) 4种 (C) 5种 (D) 6种9.下列哪个化合物可以起卤仿反应? C (A) CH 3CH 2CH 2OH (B) C 6H 5CH 2CH 2OH (C) CH 3COCH 2CH 2COCH 3 (D) HCHO10.下列四个试剂,不跟CH 3CH 2COCH 2CH 3反应的是: B (A) RMgX (B) NaHSO 3饱和水溶液 (C) PCl 5 (D) LiAlH 4(D)(C)(B)(A)I I HO 2C CO 2H Br Br I Cl I Br I IHO 2C CO 2H II11.下面化合物羰基活性最强的是: C (A) ClCH 2CH 2CHO (B) CH 3CH 2CHO (C) CH 3CHClCHO (D) CH 3CHBrCHO12. C 6H 6 + (CH 3)2CHCH 2Cl 主要得到什么产物? B(A) PhCH 2CH(CH 3)2 (B) PhC(CH 3)3(C) PhCH(CH 3)CH 2CH 3 (D) Ph(CH 2)3CH 313.乙醛和过量甲醛在NaOH 作用下主要生成: B14.下列四个反应,哪一个不能用来制备醛: D (A) RMgX + (① HC(OEt)3,② H +/H 2O) (B) RCH 2OH + CrO 3/H 2SO 4 蒸馏 (C) RCH=CHR + (① O 3,②H 2O/Zn) (D) RCOCl + H 2/Pt15.下面的氧化反应,用何种氧化剂较好? C (A) K 2Cr 2O 7/H + (B) CrO 3·吡啶 (C) Ag(NH 3)2+ (D) 稀、冷KMnO 416.下面反应的主要产物是: B17. 下列反应应用何种试剂完成? B(A) NaBH 4 (B) Na +C 2H 5OH(C) Fe + CH 3COOH (D) Zn(Hg) + HClAlCl 3(A) (HOCH 2)3CCHO (B) C(CH 2OH)4 (C) CH 3CH CHCHO (D) CH 3CHCH 2CHO CH O CO 2H CH 3OC O ONaBH 4OH HHOC OH H CH 3OCO H OH CH 3OC O H OH HOC H 2H 2(D)(B)(A)(C)O COOCH 3HO CH 2OH18. LiAlH 4可以还原酰氯(I),酸酐(II),酯(III),酰胺(IV)中哪些羧酸衍生物? D(A) I, (B) I,II (C) I,II,III (D) 全都可以19.完成下列反应需要的还原剂是 B(A)Na + EtOH (B) LiAlH 4 (C) NaBH 4 (D) Na/NH 320. 下列化合物中酸性最强者为: A (A) ClCH 2CO 2H (B) CF 3CO 2CH 3 (C) CF 3CH 2OH (D) CH 3CH 2CO 2H21.下列四种化合物亚甲基的相对酸性顺序为: C Ⅰ ⅡⅢ Ⅳ(A) Ⅰ>Ⅱ>Ⅲ>Ⅳ (B) Ⅱ>Ⅳ>Ⅰ>Ⅲ (C) Ⅰ>Ⅱ>Ⅳ>Ⅲ (D) Ⅳ>Ⅱ>Ⅰ>Ⅲ22. (CH 3)2CHCO 2Et 通过酯缩合反应可制备 ,所用试剂为: D(A) C 2H 5ONa/EtOH (B) CH 3ONa/CH 3OH(C) NaOH/H 2O (D) Ph 3CNa23. 下面哪个化合物在硝化时主要得到间位产物? A (A) PhN +(CH 3)3 (B) PhCH 2N +(CH 3)3 (C) PhCH 2CH 2N +(CH 3)3 (D) PhCH 2CH 2CH 2N +(CH 3)324. 用下列哪一种试剂可使苯乙酮转化成乙苯? B(A) H 2 + Pt (B) Zn(Hg) + HCl (C) LiAlH 4 (D) Na + C 2H 5OH25.月桂烯分子式(C 10H 16),它属于: A(A) 单萜 (B) 二萜 (C) 三萜 (D) 四萜COOHOHCH 3CCH 2CCH 3O O CH 3CCH 2COC 2H 5O O CH 3CCH 2Ph O C 2H 522H 5O O (CH 3)2CHCCCO 2Et CH 3O 326.与 一对化合物的相互关系是: C(A) 对映异构体 (B) 非对映异构体 (C) 相同化合物 (D) 不同的化合物27.异戊二烯经臭氧化,在锌存在下水解,可得到哪一种产物? C (A) HCHO + OHCCH 2CHO (B) HCHO + HOOCCH 2COOH (C) HCHO + CH 3COCHO (D) CH 3COCHO + CO 2 + H 2O28.A(A) 对映体 (B)非对映体(C) 同一化合物相同构象 (D) 同一化合物不同构象29. 判断下述四种联苯取代物中哪个是手性分子: A30.下列化合物无光学活性的是: ACHO H OH 2OH HO CH 2OH CHO 化化化化化化化化3Br H Cl H CH 3Br H 3ClH CH 3(D)(C)(B)(A)I I HO 2C CO 2H Br Br I Cl I Br I IHO 2C CO 2H II (D)(B)(C)(A)OOH2H 5HO 2H CH 3OOH C C OCH 3O CO 2H O N ClC CH 3OH OH I C。
反假币考试试题第三套(人民币)
练习题一、单选题第1题: 观察第五套人民币1999年版100元纸币上的隐形面额数字防伪特征,正确的方法是()。
A.将票面置于紫外灯下B.将票面置于与眼睛接近平行的位置,面对光源作平行旋转45度或90度角C.将票面面对光源作平行旋转45度或90度角D.将票面面对光源作顺时针旋转45度或90度角正确答案:B第2题: 1999年版人民币100元纸币安全线上缩微文字是()。
A.¥100B.100C.RMB100D.人民币100正确答案:C第3题: 1999年版人民币()纸币为横竖双号码,横号码为黑色,竖号码为红色。
A.20元B.5元C.100元D.50元正确答案:D第4题: 1999年版人民币10元纸币共有()种公众防伪特征。
A.8B.9C.10D.11正确答案:C第5题: 2005年版人民币5元纸币共有()种专业防伪特征。
A.6B.7C.8D.9正确答案:C第6题: 1999年版人民币5元纸币共有()种公众防伪特征。
A.9B.10C.12D.13正确答案:A第7题: 第五套人民币1元纸币的背面主景图案是()。
A.B.C.正确答案:B第8题: 人民币1999年版、2005年版5元纸币背面有色荧光油墨印刷图案在紫外光下显现()色。
A. 黄B. 绿C. 红D. 蓝正确答案:B第9题: 第五套人民币1999年版1元纸币的固定花卉水印是()水印。
A.兰花B.荷花C.水仙花D.牡丹正确答案:A第10题: 1999年10月1日,中国人民银行发行了()人民币。
A.第二套B.第三套C.第四套D.第五套正确答案:D第11题: 目前市场上伪造的人民币主要是()假人民币。
A.机制B.手工制作C.计算机制作D.彩色复印正确答案:A第12题: 未经()批准,任何单位和个人不得研制、仿制、引进、销售、购买和使用印制人民币所特有的防伪材料、防伪技术、防伪工艺和专用设备。
A.国家专利局B.中国人民银行C.中国印钞造币总公司D.国务院正确答案:B第13题: 金融机构在办理业务时发现假币,由该金融机构()业务人员当面予以收缴。
2023.12四级真题第3套及答案详细解析
P ar t 大学英语四级考试2023年12月真题(第3套)及真题详细解析I W r i t i n g (30 m i nu t e s )D i re c t i o n s : S u pp o se t h e un i v ers i t y n e w s p a p e r i s i n v i t i n g su b m i s s i on s f r o m t h e s t u d e n t s f o r i t s c o m i n ge di t i on o n w h a t i n t h e i r u n i v e rs i t y i m p re sse s t h em m os t . Y o u a r e n o w t o wr i t e a n e ss a yf o r su b m i s s i on .Y o u w i l l h a v e 30 m i n u t e s t o w r i t e t h e e ss a y . Y o u s h o u l d wr i t e a t l e as t 120 w o r d s b u t n o mo r e t h a n 180w o r d s.L i s t e n i n g C o m p re h e ns i o n P ar t I Ⅱ(25 m i n u t e s )特别说明:由于多题多卷,官方第三套真题的听力试题与第二套真题的一致,只是选项顺序不同,因此,本套试卷不再提供听力部分。
R e a d i n g C o m p re h en s i o n P a r t Ⅲ(40 m i n u t es )S e c t i o n A D i rec t i o ns : I n t h i s sec t i o n , t h e r e i s a p a s s a g e w i t h t en b l a n k s . Y o u are re q u i r e d t o se l e c t o n e w or d f o r e a c h b l an k f r om a l i s t o f c h o i c es g i v e n i n a w o r d b a n k f o ll o w i n g t h e p as a g e . R e a d t h e p a ss a g e t h r o u g h c a r e f u l l y b e r o r e m a k i n g y o ur c h o i c e s . E a c h c h o i c e i n t h e b an k i s i d e n t i i e d b y a l e t t e r P l e as e m a r k t h e c o r r e s p on di n g l e t e r f o r e a c h i t e m o n A n s w e r S h ee t 2 w i t h a s i n g l e li n e t h r o u g h t h e ce n t re . Y o u m a y no t u se a n y o f t h e wor d s i n t h e b a n k m ore t h a n o n ce .W h en p eo p l e s e t o u t t o i m p r o v e t h e i r h e a l t h , t h e y us ua l l y t a k e a f a m ili ar p a t h : s t a r t i n g a h e a l t h y d i e t , g e t t i n g b e t t e r s l ee p , an d d o i n g r e g u l a r e x e rc i s e . E ac h o f t h e s e b e h av i o r s i s i m p o r t an t , o f co urs e , b u t t h e y a l l 26 o n p h y s i c a l h ea l t h —a n d a g r o w i n g b o d y o f r e s e ar c h s u g g e s t s t h a t s oc i a l h e a l t h i s j us t as , i f n o t m o re , i m p o r t an t t o 27 w e l l -b e i n g .O n e r ece n t s t u d y p u b l i s h e d i n t h e j o u m a l P L OS ON E , f o r e x am p l e , f o un d t h a t t h e s t r en g t h o f a p er s o n 's s oc i a l c i r c l e w as a b e t t e r 28_ o f se l f -r e p o r t e d s t r e ss , h a pp i n e ss an d w e l l -b e i n g l e v e l s t h a n fi t n e ss t ra c k e r d a t a o n p h y s i c a l ac t i v i t y , h ear t ra t e an d s l e e p . T h a t fi n di n g s u gg es t s t h a t t h e “29 se l f ” r e p r ese n t e d b y e n d l ess am o un t s o f h ea lth d a t a d o e sn 't t e l l t h e w h o l e 30T h e r e 's a l so a q u a li f e d se l f , w h i c h i s w h o I am , w h a t a r e m y ac t i v i t i es , m y s oc i a l n e t w o r k , an d a l l o f t h e s e i n an y o f t h e s e meas u rem e n t s .as p ec t s ar e n o t 31T hi s id ea i s s u p p o r t e d b y p l e n t y o f 32 r e s e ar c h . S t u di e s h ave s h o w n t h a t s o c i a l su pp o r t -w h e t h er i t c omes 33 a ss o c i a t e d w i t h b e t t e r m e n t a l an d p h y s i c a l h e a l t h . A r i c h f r o m f r i en d s , f a m i l y m e m b e r s o r a s p o us e -i s s oc i a l l if e , t h e s e s t u d i e s su g g es t , ca n l o we r s t r ess l e ve l s ,i m p r o ve m oo d , e n co u ra g e p os i t i v e h ea l t h b e h a v i o r s a n d d i scou ra g e d a ma g i n g o n es , b oo s t h ea r t h e a l t h a n d i m p r o ve i ll ne ss 34 ra t e s .S oc i a l i s o l a t i o n , m eanw h il e , i s li n k e d t o hi g h er ra t e s o f p h y s i c a l di s e a s e s an d men t a l h ea l t h con d i t i o ns .I t 's a s i g n if i can t p ro bl e m ,35 s i n ce l o n e li n es s i s eme r g i n g as a w i d e s p r e a d p u b l i c h e a l t h p r o b l e m i n m a n y c o u n t r i e s .·2023年12月四级真题(第三套)·19。
操作基础第三套模拟试题
一.单项选择题1.下面的几组设备中包括输入设备、输出设备和存储设备的是()A)CRT、CPU、ROMB)磁盘、显示器、键盘C)鼠标器、绘图仪、光盘D)磁盘、打印机、绘图仪2.目前计算机最具有代表性的应用领域有科学计算、数据处理、过程控制及()A)绘图自动化B)程序设计C)计算机辅助工程D)操作系统3.下面列出的四项中,不属于计算机病毒特征的是()A)激发性B)传染性C)免疫性D)破坏性4.下列是关于存储容量的描述,正确的是()A)1KB=1000BytesB)1GB=1024×1024KBC)1GB=1024 KBD)1MB=1024×1024 Bytes5.目前,一台计算机要连入Internet,必须安装的硬件是()A)www浏览器B)网络查询工具C)网络操作系统D)调制解调器(Modem)或网卡二、操作题1.在D盘根目录下创建文件夹ks,然后在ks文件夹下创建子文件夹ks12.将“nit任务(4)”文件夹下的“操作基础第三套模拟试题”文件复制到桌面3.设置桌面显示的外观的方案为“Windows 标准(大)”。
4.在“开始菜单”的“程序”组中添加“画图”应用程序的快捷方式。
5.利用控制面板的鼠标,设置按钮配置为左手习惯,移动鼠标时显示指针轨迹。
(提示:做好后记得改回来,否则鼠标就会不好用了哦!)6.在桌面创建“nit任务(4)\录入练习4”文件的快捷方式,并改名为“打字练习”(在桌面右击-新建快捷方式)三、文字录入题(15分)完成《录入练习4》四、文本编辑1.使用Word2000软件,将本目录中提供的有关北京申奥的SC2.DOC文档,通过以下操作要求,制作成一个可供出版的文档。
将文档中的标题“会徽说明”和“口号说明”居中,并设置为隶书、小一号、红色。
2.使用Word2000软件,将本目录中提供的有关北京申奥的SC2.DOC文档,通过以下操作要求,制作成有一个可供出版的文档。
2024年6月第3套英语四级真题
大学英语四级考试2024年6月真题(第三套)Part I Writing(30minutes) Directions:Suppose your university is seeking students'opinions on whethe university canteens should be open to the public.You are now to write an essay to express your view.You will have30minutes for the task.You should write at least120words but no more than180words.Part II Listening Comprehension(25minutes)特别说明:由于多题多卷,官方第三套真题的听力试题与第二套真题的一致,只是选项顺序不同,因此,本套试卷不再提供听力部分。
Part III Reading Comprehension(40minutes) Section ADirections:In this section,thereis a passage with ten blanks.You are required to select one wordfor each blank from a list of c hoices given in a word bankfollowing the passage.Read the passage through carefully before making your choices.Each choice in the bank is identified by a letter.Please mark the corresponding letter f or each item on Answer Sheet2with a single line through the centre.You may not use any of t he words in the bank more than once.Over the coming decades,millions of j obs will be threatened by robotics and artificial intelligence.Despite intensive academic26on these developments,there has been little study on how workers27to being replaced through technologyTo find out,business researchers at TUM and Erasmus University Rotterdam conducted11studies and surveys with over2,000persons from several countries.The findings show:In principle,most people view it more28when workers are replaced by other people than by robots or intelligent software.This preference29however,when it refers to people's own jobs When that is the case,the majority of workers find it less upsetting to see their own jobs go to robots than to other employees.In the long term,however,the same people see machines as more threatening to their future role in the workforce.These effects can also be observed among people who have recently become unemployed.The researchers were able to identify the causes behind these30paradoxica results,too:Peopletend to31themselves less with machines than with other people.Consequently,being replaced by a robotor so ftware32less of a threat to their feeling of self-worth.This reduced self-threat could even be observedwhe n participants assumed that they were being replaced by other employees who relied on technological abilities such as artificial intelligence in their work."Even when unemployment results from the33of new technologies,people still judge it in a social context,"says Christoph Fuchs,one of the authors of the study."It is important to understand these34effects when trying to manage the massive changes in the working world to minimize35in society."19.202样6月四级真题(M三套).A)compare I)introductionB)contradicts^modificationsC)conventional K)posesD)debate L)psychologicalE)disruptions M)reactF)drastically N)reversesG)favorably O)seeminglyH)guaranteeSection BDirections:In this section,you are going to read a p assage with ten statements attached to it.E ach statement contains information given in one of t he paragraphs.Identify the paragraph f rom which the information is derived.You may choose a paragraph more than once.Each paragraph is marked with a letter.Answer the questions by marking the correspondingletter on Answer Sheet2.No escape as'snow day!becomes fe-learning day'A)C ertain institutions,such as schools,are likely to close when bad weather,such as snow,flooding or extremeheat or cold,causes travel difficulties,power outages(断供),or otherwise endangers public safety.When snowy weather arrives in the US,it means the chance of school children benefiting from the long-standing tradition of t he"snow day",when schools are forced to close and students get an unexpected day offB)The criterion for a snow day is primarily the inability of school buses to operate safely on their routes anddanger to children who walk to school.Often,the school remains officially open even though buses do not run and classes arecanceled.Severe weather that causes cancellation or delayis more likely in regions that are less able to handle the situation.Snow days are less common in more northern areas of t he United States that are used to heavy winter snowfall,because municipalities are well equipped to clear roads and remove snow.In areas less accustomed to snow even small snowfalls of a n inch ortwo may render roads unsafe.C)S now days are a familiar theme in American film and TV shows,with children getting the good news andthen running outside for some seasonal snowman-building and snowball throwing,against a background ofjoyful pop music.But the tradition is now over for pupils in several US states such as South Carolina, Nevada,Georgia and Indiana.This academic year,many school boards have introduced policies which require students to work from home if t he school is shut by snow or extreme weather.They are known as t4e-leaming days",which certainly sounds less fon than a snow day.D)T eachers are also losing their snow days and instead will be expected to be on hand to take a virtual registerand answer students'questions online.A pilot programme in a school district in Anderson County,South Carolina,has supplied students with electronic tablets loaded with assignments to complete in the event of a school closure.If it is successful,it could be rolled out across the state.E)But some parents object to the new policy if t he vigorous debate on the Facebook page of A nderson Countyschool district is anything to go by."When it snows,let the kids enjoy it,"said one commenter.Another said the decision would"ruin school even more",and someone else called snow days"a fun part of c hildhood,^.But supporters of t he policy say it means children will miss fewer days of school.lt will also bring to an enda less popular US high school tradition:the“make-up day?,,which requires students in many states to makeup the time lost due to weatherby working during school holidays.-2024年6月四级真题第三套)-2)F) S tudents in North Carolina already have several make-up days scheduled because of school closures duringHurricane Florence,which struck in September.Tom Wilson,the superintendent(i^)of Anderson County school district,said the change away from snow days makes practical and financial sense.He said technology has changed every profession,so it makes sense to use it to^eliminate^make-up days.Adam Baker of the Department of Education in Indiana said e-learning days were proving a cc great success,^.He said most Indiana schools already use digital devices during lessons,so it was an cc easy decision^to extend this to days when schools are closed.He denies the decision is depriving children of the chance to enjoy the snow."Students are still able to enjoy snow days and outside time,"he said."Many have PE and science assignments that have them out enjoying the weather.^But local school superintendents in Ohio are resisting proposals to adopt e-learning days.They fear that students without internet access at home will be disadvantaged by the policy,and superintendent Tom Roth is concerned that e-learning days will offer a lower quality of education.G)T here are also so-called tc blizzard bags",with assignments that children take home ahead of an expected snowclosure.But Mr Roth says it is not sufficient as a replacement/!think we still need the class time to give our kids the education that they deserve,^he said."Youcan't get that with a blizzard bag or doing the work from home like that.If s not going to be as effective.H) T here is a long-running debate on whether missing days of school affects attainment.In England,there hasbeen a focus on tackling absenteeism(0T from school.The Department for Education(DFE)published research in2016arguing that missing any days at school could have a negative impact on results.Even a few days lost in a year could be enough to miss out on getting a good exam grade,the DFE's research concluded.This differed from the findings of a study from Harvard University in the US,which concluded that missing a few occasional days because of t he weather did not damage learning.I)The Harvard study examined seven years of school results data and could not find any impact from snowclosures.What caused moredisruption was when schools tried to stay open in bad weather,even though many staff and pupils were absent.But weather can make a difference to school results,according to another piece of Harvard research published last summer.Ifs hot weather that has the negative impact.The results of 10million school students were examined over13years and researchers found a^significanfUink between years with extremely hotweather and lower results.J)I fs obvious that students should go to school every day to get the most out of education.I n cases of extreme weather students don't always have that option.However,research shows that authorised absences from school such as during extreme weather are less problematic for students than absences that are not authorised.This is because unauthorised absences tend to reflect patterns and behaviours of student disengagement,or the possible negative attitudes of parents towards education that students adopt and carry with them through schooling.The level of impact on students f educational performance is all to do with the length of time that a student is absent from school and how regularly this occurs.36.There is opposition to the practice of giving children assignments to take home before extreme weather forcesa school closure.37.N ew policies adopted by many US schools require students to do online learning at home in case of a schoolclosure38.A ccording to some research,extreme hot weather negatively affects students^erfbrmance.39.There is a time-honoured tradition in the US fbr school kids to stay at home on^snow days".21.202仰6月四级真题(M三套).40.Debates on social media show some parents are opposed to ending the^snowday^tradition.41.In more northern regions of t he US,school is less likely to be affected by snowy weather.42.R esearch indicates absences from school with permission do not cause as many problems as those withoutpermission.43.T here is objection to e-learning days owing to fear that students with no access to the Internet at home willsuffer44.In a pilot programme,students are given electronic devices to doassignments when schools areclosed.45.A long-standing debate is going on over the impact of school absences on students^cademic performance.Section CDirections:There are2passages in this section.Each passage is followed by some questions or unfinished statements.For each of them there are f our choices marked A),B),C)and D).You should decide on the best choice and mark the corresponding letter on Answer Sheet2with a single line through the centre.Passage OneQuestions46to50are based on the following passage.It may sound surprising,but you don't have to be interested in fashion,or even in history,to enjoy Dress Codes:H ow the Laws of F ashion Made History.I happen to be interested in both,and ended up enjoying the book for completely different reasons.Richard Thompson Ford is a law professor,and you probably won't forget that for even one page.His carefully reasoned arguments,packed with examples,sound almost like reading a court opinion,only maybe wordier.Y ou will probably never think of fashion as a trifle again.Ford's thesis is that the best way to understand what particular fashions meant in any given era is to look at the restrictions placed on them.Through this lens,he shows us that the first laws passed in the1200s to ensure that only the nobility were allowed to wear certain fabrics,colors and ornaments reflected the rise of the middle class,who were now able to imitate some of these fashions.The status of the upper classes was threatened; fashion was a tool to preserve it.Ford takes the reader through the evolution of fashion while examining the underlying motivations of status sex,power,and personality,which,he assumes,influenced all innovations in fashion in the past and which continue to influence us today.His writing is more than alittle dense—dense with research,clauses,and precise adjectives and nouns.But there's also humor and enough interesting episodes to make the writing appealing.No one is spared his sharp analysis:not the easy targets of19th century women's crippling(伤害身体的)fashions nor the modem uniforms of Silicon Valley T-shirts.But the greatest strength of this book(on fashion!)is its intellectual profoundness.Ford asks us to question unconscious beliefs,to realize thatwe almost never do so,to understand that the simplest choices are charged with meaning,and yet that meaning can and does change all thetime.Consider the fact that a1918catalog insisted that boys and girls be dressed in the appropriate color.We believe our thinking today is evolved;Ford shows us it's not.46.W hat does the author think of t he book Dress Codes:How the Laws of F ashion Made History?A)I t is read by people fbr entirely different reasonsB) I t is meant fbr those interested in fashion history.202砰6月四级真题三套).22C)I t makes enjoyable as well as informative reading.D)I t converts fashion into something fbr deliberation.47.H ow can people best understand a particular fashion in an era,according to Ford?A)B y examining the restraints imposed on it.C)By glancing at its fabrics,colors and ornaments.B)B y looking at what the nobility were wearing.D)By doing a survey of t he upper and middle classes.48. W hat was the aim of t he first laws passed regarding fashion in the1200s?A)T o facilitate the rise of the middle class C)To help initiate some novel fashions.B)T o loosen restrictions on dress codes.D)To preserve the status of the nobles.49. W hat does the author think of Ford's writing?A)I t uses comparison and contrast in describing fashions of different erasB)I t makes heavy reading but is not lacking in humor or appealC)It is filled with interesting episodes to spare readers intolerable boredom.D)I t is characteristic of academics in presenting arguments.50.W hat does the author say is the greatest strength of F ord's book?A)P lentiful information.C)Evolved thinkingB)M eaningful choices.D)Intellectual depthPassage TwoQuestions51to55are based on the followingpassage.The art of p ersuasion means convincing others to agree with your point of view or to follow your course of action.For some ofus,persuasion is an instinctive quality and the power of influencing comes naturally.For the rest of u s,persuasion skills can be learned and developed over time.Employers place a great value on employees with persuasion skills because they can impact several aspects of j ob perfbrmance.Besides,teamwork and leadership rely heavily on the power of persuasion to get things done.Without persuasion skills,employees may not be as committed to or convinced of the importance of an organization^vision and long-term mission.Effective use of persuasion skills will not only help get your coworkers excited about your ideas,ifll also help you motivate them to achieve a common goal.In order to learn the art of persuasion at the workplace,you need to understand how to handle conflicts and reach agreements.Good communication is the first step in effective persuasion,but logic and reasoning are just as important.Befbre you can get somebody on-board with your goal,you should help them understand why they should pursue ing visual aids to back up your ideas can help communicate your ideas better and make compelling arguments so your listeners will come to a logical choice and become fully committed to your ideas and plans.Successful persuasion skills are based on your ability to have positive interactions and maintain meaningful relationships with people.In order to sustain thoserelationships,you must be able to work in their best interests as well.Your coworkers are more likely to agree with you when they succeed alongside you.The more they achieve and the greaterprogress they make,the more they trust your judgement and strength.We persuade and get persuaded every daywe're either convincing or being convinced.A vast majority of people prefer collaboration and teamwork over traditional organizational structures;no one likes to be told what to do or to be pushed around.Therefore,organizations and leaders should adopt powerful persuasion skills to bring about necessary changes.23.202砰6月四级真题三套).51.What does the author say about the ability to be persuasive in the first paragraph?A)P eople may either be born with it or be able to cultivate it.B) I t proves crucial in making others follow one's course of action.C)It refers to the natural and instinctive power of influencing one!s coworkers.D)P eople may view it as both a means to convince others and an art of communication.52.Why are persuasion skills greatly valued in the workplace?A)T hey enable employees to be convinced oftheir long-term gains.B) T hey enable employees to trust their leaders unconditionally.C)They help motivate coworkers to strive for a common goal.D)T hey help an organization to broaden its vision effectively.53.W hat should people do to learn the art of p ersuasion atthe workplace?A)A cquire effective communication skills.C)Understand the reason for pursuing their goalsB) A void getting involved in conflicts with others.D)Commit themselves fully to their ideas and plans54.W hen are you more likely to succeed in persuading your coworkers?A)W hen they are convinced you work in their interests while sacrificing your own.B)W hen they become aware of the potential strength of t he judgements you make.C)When they become aware of t he meaningful relationships you keep with them.D)W hen they are convinced they will make achievements together with you.55.W hy are organizations and leaders advised to adopt powerful persuasion skills to bring about necessarychanges?A)T o convince employees of t he value of collaboration.B)T o allow for the preferences of m ost people of t odayC)To improve on traditional organizational structuresD)T o adapt to employees'ever-changing working styles.Part IV Translation(30minutes) Directions:For this part,you are allowed30minutes to translate a passage f rom Chinese into English.You should write y our answer on Answer Sheet2.汉语中的“福”字(the character fU)表示幸福和好运,是中国传统文化中最常用的吉祥(auspicious符号之一。
公共科目第三套
试题内容可选答案A在公安机关立案侦查后,犯罪嫌疑人逃避侦查的,不受追诉期限讯问同案的犯罪嫌疑人应当分别进行。
某省人大常委会制定了该省的《消防条例》,关于该地方性法规的具体应用问题,可以由该省政府以规章形式作出规定。
中华人民共和国是工人阶级领导的、以工农联盟为基础的人民民主专政的社会主义国家。
国家保护一切宗教活动。
预防、制止和侦查违法犯罪活动是公安机关的人民警察的法定职责。
人民警察可以依法参加罢工人民警察依法使用警械和武器的行为受法律保护,但人民警察使用非警用器械制止违法犯罪行为不受法律保护。
根据《治安管理处罚法》的规定,经公安机关调解,当事人达成协议并履行,不予处罚。
对不接受传唤或者逃避传唤的人,可以强制传唤。
没有法定依据或者不遵守法定程序的,行政处罚无效。
对违法嫌疑人照片进行辨认的,不得少于10人的照片。
两个以上违法嫌疑人分别对同一行政案件提出听证要求的,应当合并举行。
受害的公民死亡,其继承人和其他有扶养关系的亲属有权要求赔偿。
公安机关从事警务技术工作的人民警察实行警务技术职务序列。
防卫过当应当负刑事责任,但是可以减轻或者免除处罚。
在犯罪过程中,嫌疑人虽自动放弃犯罪但没有有效地防止犯罪结果发生,不属于犯罪中止。
刑法分为主刑,附加刑和驱逐出境。
在公安机关立案侦查或者人民法院受理案件以后,逃避侦查或者审判的 ,不受追诉期限的限制。
聚众斗殴,致人重伤、死亡的,以聚众斗殴罪定罪处罚。
概括起来讲,( )就是法无明文规定不为罪,法无明文规定不罪刑法定原则关于宪法在立法中的作用,下列哪一说法是不正确的?( )宪法确立了法律体系的基国家依照法律规定保护公民的私有财产权和 ( )。
继承权公民的人格尊严不受侵犯,禁止用任何方法对公民( )。
侮辱、诽谤、控告下列属于公安机关的人民警察的法定职责的是( )。
维护社会治安秩序公安机关人民警察因履行职责的紧急需要,经( ),可以优先说明情况人民警察使用警械和武器前,应当( )。
普通话测试题第三套
第三套第一题:哑铸染亭后挽敬疮游乖仲君凑稳掐酱椰铂峰账焦碰暖扑龙碍离鸟瘸密承滨盒专此艘雪肥薰硫宣表嫡迁套滇砌藻刷坏虽滚杂倦垦屈所惯实扯栽额屡弓拿物粉葵躺肉铁日帆萌寡猫窘内雄伞蛙葬夸戴罗并摧狂饱魄而沈贤润麻养盘自您虎第二题:勾画刚才松软半截儿穷人吵嘴乒乓球少女篡夺牛顿沉默富翁傻子持续佛像被窝儿全部乳汁对照家伙灭亡连绵小腿原则外国戏法儿侵略咏叹调愉快撒谎下来昆虫意思声明患者未曾感慨老头儿群体红娘觉得排演赞美运输抓紧儿童症状机灵昂首第三题:高兴,这是一种具体的被看得到摸得着的事物所唤起的情绪。
它是心理的,更是生理的。
它容易来也容易去,谁也不应该对它视而不见失之交臂,谁也不应该总是做那些使自己不高兴也使旁人不高兴的事。
让我们说一件最容易做也最令人高兴的事吧,尊重你自己,也尊重别人,这是每一个人的权利,我还要说这是每一个人的义务。
快乐,它是一种富有概括性的生存状态、工作状态。
它几乎是先验的,它来自生命本身的活力,来自宇宙、地球和人间的吸引,它是世界的丰富、绚丽、阔大、悠久的体现。
快乐还是一种力量,是埋在地下的根脉。
消灭一个人的快乐比挖掘掉一棵大树的根要难得多。
欢欣,这是一种青春的、诗意的情感。
它来自面向着未来伸开双臂奔跑的冲力,它来自一种轻松而又神秘、朦胧而又隐秘的激动,它是激情即将到来的预兆,它又是大雨过后的比下雨还要美妙得多也久远得多的回味……喜悦,它是一种带有形而上色彩的修养和境界。
与其说它是一种情绪,不如说它是一种智慧、一种超拔、一种悲天悯人的宽容和理解,一种饱经沧桑的充实和自信,一种光明的理性,一种坚定......第四题:1.我喜欢的节日2.我喜爱的动物(或植物)。
排球理论考试试题带答案(第三套)
排球理论考试试题带答案(第三套)一、选择题1、队长﹍﹍﹍号码下,应有一条与上衣颜色不同的长8厘米、宽2厘米的条状标志。
A、上衣胸前B、上衣身后C、短裤正确答案:A2、﹍﹍﹍在比赛后感谢裁判员,并在记分表上签字承认比赛结果。
A、队长B、场上队长C、教练员正确答案:A3、中国排球协会于﹍﹍﹍在北京正式成立。
A、1951年B、1953年C、1958年正确答案:B4、﹍﹍﹍在比赛后感谢裁判员,并在记分表上签字承认比赛结果。
A、队长B、场上队长C、教练员正确答案:A5、沙滩排球﹍﹍﹍年正式成为奥运会正式比赛项目。
A、1996B、2000C、2004 正确答案:A6、﹍﹍﹍技术是排球技术中唯一不受他人制约的技术。
A、扣球B、发球C、拦网正确答案:B7、沙滩排球比赛中所有局间休息的时间均为﹍﹍﹍分钟。
A、1B、2C、3 正确答案:A8、沙滩排球比赛一局中(决胜局除外)先得到﹍﹍﹍并至少超过对方2分的队胜一局。
A、15分B、21分C、25分正确答案:B9、下列﹍﹍﹍队员是属于后排,较于前排队员更靠近本方端线。
A、1号位B、2号位C、3号位正确答案:A10、场上的5号位是指﹍﹍﹍。
A、前排左侧位置B、后排左侧位置C、后排右侧位置正确答案:B11、排球运动是由美国麻省好利若城青年会干事﹍﹍﹍发明的。
A、威廉摩根B、奈史密斯C、阿科斯塔正确答案:A12、我国著名排球运动员﹍﹍﹍曾被誉为“世界排坛第一飞人”。
A、汪嘉伟B、张翔C、郑亮正确答案:A13、第一裁判员鸣哨后,发球队员必须在﹍﹍﹍内将球发出。
A、6秒B、8秒C、10秒正确答案:B14、“四二”配备时应安排﹍﹍﹍。
A、一名二传和五名进攻队员B、二名二传和四名进攻队员C、三名二传和三名进攻队员正确答案:B15、国际排联世界性比赛的第1-4局中,每局除被请求的暂停外,另外有两次技术暂停,每当领先队达到﹍﹍﹍时自动执行。
A、8分和15分B、8分和16分C、10分和20分正确答案:B16、球网上沿两标志杆之间的距离为﹍﹍﹍。
普通话水平测试题第三套
普通话水平测试题第三套一、读单音节字词100个女贼宣弱童思驴略东虹邹穷军邢兄远训剜撞拐泉柔广堆怀短翁嫩胞垮吹吞蚌刷嗑肥尼垒经鳃觉角我阳价催抢谋热腺额浮俩勤算字尊仍野紧省骨含槛缝止分浊逞俏濒闪沉拔丢港靠鸣擦索埋扒伤庙贰海超拗坡百实梯枕挠舔劣撤草乳苍二、读双音节词语50个旅途掠夺迥然暖和民间儿歌贵重偏差爽朗模型容易岁月快板儿慷慨沙发漂亮眉毛篡改面条儿只好搜集寻找取得聘书裁定损害如果洽谈滑冰群岛参政自焚最初捐献皇帝困难衰退丝绸始祖寡妇全部下放痴心别人内在碾盘牛油蝶泳草垫儿铿锵三、朗读作为普通人, 可能没人反对环保, 可许多并不反对环保的人实际上也没为环保做点什么。
于是, 下面的状态并不会受到谴责, 良心也坦然。
我没有把洗澡的水存起来冲厕所, 我也没有把淘米的水用来洗菜, 这么做也没什么不妥, 因为我付水费了……我在办公室或者在家里用纸从没考虑到两面利用, 仅仅因为我用的那些纸都是免费得来的; 有时也是为了好看, 总不能给人家写信或者投稿都用反面已经用过的废纸吧, 这是礼貌问题。
我认识一个人, 他在用水方面是个地地道道的“吝啬鬼”。
他把洗澡水用来冲厕所, 把洗菜的水用来洗别的菜。
有一次他对我说, 我知道这也许帮不了什么忙, 我知道我节约的这么点水还抵不上一个公共场合坏水龙头一刻钟流失的水, 我知道我根本管不了那么多, 中国太大了, 我甚至不能在公共浴池制止那些让淋浴没完没了冲洗自己的人, 可我还是愿意尽我所能节约一点水。
我想的是我一天省下的水至少能让一棵小树成活。
于是, 所有的树木在我这儿都变得具体了, 我和它们之间也有了联系, 当我看着它们的时候, 我就很幸福, 这幸福的感觉又会给我新的力量,坚持做下去。
他的理解打动了我, 倒不是他做的事有什么特别的意义, 但他能让自己从中获得安慰, 这境界已经让我羡慕。
( 节选自皮皮《环保是一种时尚》)四、说话( 任选一个题目说3-4 分钟)1. 现代科技与日常生活2. 我最喜欢的一本书。
普通话测试题 第三套
第三套第一题:哑铸染亭后挽敬疮游乖仲君凑稳掐酱椰铂峰账焦碰暖扑龙碍离鸟瘸密承滨盒专此艘雪肥薰硫宣表嫡迁套滇砌藻刷坏虽滚杂倦垦屈所惯实扯栽额屡弓拿物粉葵躺肉铁日帆萌寡猫窘内雄伞蛙葬夸戴罗并摧狂饱魄而沈贤润麻养盘自您虎第二题:勾画刚才松软半截儿穷人吵嘴乒乓球少女篡夺牛顿沉默富翁傻子持续佛像被窝儿全部乳汁对照家伙灭亡连绵小腿原则外国戏法儿侵略咏叹调愉快撒谎下来昆虫意思声明患者未曾感慨老头儿群体红娘觉得排演赞美运输抓紧儿童症状机灵昂首第三题:高兴,这是一种具体的被看得到摸得着的事物所唤起的情绪。
它是心理的,更是生理的。
它容易来也容易去,谁也不应该对它视而不见失之交臂,谁也不应该总是做那些使自己不高兴也使旁人不高兴的事。
让我们说一件最容易做也最令人高兴的事吧,尊重你自己,也尊重别人,这是每一个人的权利,我还要说这是每一个人的义务。
快乐,它是一种富有概括性的生存状态、工作状态。
它几乎是先验的,它来自生命本身的活力,来自宇宙、地球和人间的吸引,它是世界的丰富、绚丽、阔大、悠久的体现。
快乐还是一种力量,是埋在地下的根脉。
消灭一个人的快乐比挖掘掉一棵大树的根要难得多。
欢欣,这是一种青春的、诗意的情感。
它来自面向着未来伸开双臂奔跑的冲力,它来自一种轻松而又神秘、朦胧而又隐秘的激动,它是激情即将到来的预兆,它又是大雨过后的比下雨还要美妙得多也久远得多的回味……喜悦,它是一种带有形而上色彩的修养和境界。
与其说它是一种情绪,不如说它是一种智慧、一种超拔、一种悲天悯人的宽容和理解,一种饱经沧桑的充实和自信,一种光明的理性,一种坚定......第四题:1.我喜欢的节日2.我喜爱的动物(或植物)。
高压电工操作参考试题(单选) 第三套
电站高压练习试题1、防误装置电源应与( )电源独立?DC.操作B.事故照明D.继电保护及控制回路A直流2、( )作用是进行系统功率交换,将长距离输电干线分段,降压向当地负荷供电。
BC.地区变电站B.中间变电站A开关站D.枢纽变电站3、值班监控人员、厂站运行值班人员及输变电设备运维人员可不待调度指令自行进行的紧急操作,不包含以下哪项?CD.将故障停运已损坏的设备隔离C.退出故障设备保护A将直接对人身安全有威胁的设备停电B.当厂(站)用电部分或全部停电时,恢复其电源4、有载调压变压器通过调节( )调节变压器变比.AD.高压侧电压A分接头位置B.低压侧电压C.中压侧电压5、母差保护的毫安表中出现的微小电流是电流互感器( ).BB.误差电流D.短接电流C.接错线而产生的电流A.开路电流6、大修后的变压器在投运时一般需冲击( ).CB.2次D.4次C.3次A.1次7、对电力系统的稳定性干扰最严重的一般是( ).BA二相相间短路C.二相接地短路B.三相短路D.单相接地8、变压器中性点直接接地时,应停用( ).DB.重瓦斯保护C复压过流保护D.间隙保护A差动保护9、消弧室的作用是( ).BC.缓冲冲击力A储存电弧B.进行灭弧D.加大电弧10、变压器空载合闸时,易导致( )保护误动作。
BC.重瓦斯D零序A.轻瓦斯B.差动保护11、电网内出现四级以上的电网运行风险预警通知单对应的停电检修、调试等事件属于( )的汇报事件CC一般报告类A特急报告类D.以上都不是B.紧急报告类12、相应调控机构在接到下级调控机构事件报告后,应按照逐级汇报的原则,( )分钟内将事件情况汇报至上一级调控机构,省调应同时上报国调和分中心BA.3C.15B.5D.3013、恶劣天气、水灾、火灾、地震、泥石流及外力破坏等导致110(66)千伏变电站全停、3个以上35千伏变电站全停或减供负荷超过40兆瓦等对电网运行产生较大影响的事件;发生日食、太阳风暴等自然现象并对电网运行产生较大影响的事件属于( )事件CA特急报告类D.以上都不是B.紧急报告类C.一般报告类14、发生下列情况之一时,省调值班调度员有权吊销持证人员证书AD.未经省调值班调度员下令或许可,擅自操作省调直调、许可设备,未造成严重后果A发生误操作B.未严格执行省调下发的发输电、用电计划,无故偏离计划功率运行C.无故延误或拒绝执行调度指令,未造成严重后果15、220kV联络线应投的重合闸方式为AD.停用C综合B.三相A单相16.( )开关无故障跳闸,一般对系统潮流分配影响比较大,运行值班人员可立即检同期合上该开关,同时向省调汇报,并查找误跳闸原因.DA.线路D.母线联络B.变压器C.母线分段17、750千伏线路主要在( )电网中运行.CA.华东电网B.华中电网C.西北电网D.华北电网18、大区间交流联络线的电压等级宜与主网( )电压等级相一致。
第三套(1.猴痘预防与管理培训 2传染病报告管理培训)试题
第三套(1.猴痘预防与管理培训 2传染病报告管理培训)试题您的姓名: [填空题] *_________________________________1.不属于猴痘传播途径的是() [单选题] *A接触传播B.飞沫传播C.性传播D.粪口传播(正确答案)2.猴痘的一般接触者医学观察期为() [单选题] *A.7天B.14天C.21天(正确答案)D.30天3.猴痘区别于天花的特有症状是(D) [单选题] *A发热头痛B.肌肉酸痛C.发冷疲倦D.淋巴结肿大(正确答案)4.猴痘是由猴痘病毒引起的传染病,在预防猴痘期间,健康人不应该采取的预防措施为() [单选题] *A自我隔离(正确答案)B.加强体育锻炼C.注意个人卫生和环境卫生D.接种疫苗5.猴痘对热敏感,加热至()以上可以灭活。
[单选题] *A.56℃30分钟(正确答案)B.20℃30分钟C.50℃35分钟D.30℃60分钟6.、甲类传染病有:() [单选题] *A、霍乱、鼠疫(正确答案)B、麻疹、疟疾C、传染性非典型性肺炎、禽流感D、乙脑、血吸虫病7、医疗机构应当实行传染病()制度: [单选题] *A、预检、分诊(正确答案)B、分诊、消毒C、预检、隔离D、消毒、隔离8.发现传染病病例和疑似病例应向哪个部门报告:() [单选题] *A、急救中心(110)B、当地卫生行政主管部门C、当地人民政府D、当地疾病预防控制机构(正确答案)9.下列哪些属于疫情报告人。
() *A.医疗机构执行职务的医务人员(正确答案)B.个体开业医生(正确答案)C.采供血机构工作人员(正确答案)D.乡村医生(正确答案)10.《疫情信息报告管理规范》规定需要2小时报告的传染病有哪些?() * A鼠疫(正确答案)B艾滋病C肺炭疽(正确答案)D非典型肺炎(正确答案)E霍乱(正确答案)。
04-第三套模拟试题(电能质量)
第三套模拟试卷(电能质量)一 名词解释(每题2分,共计4分)1、电压合格率: 2、电力系统暂态稳定性:二 判断题(正确的划√ ,错误的划× ,每题0.5分,共计20分) 1、基于全功率变流器(FRC)的风电机组可以有齿轮箱也可以没有齿轮箱。
( ) 2、发电机励磁变化引起功率变化的响应特性是随运行点和系统负荷而变化的。
( ) 3、对于变速恒频DFIG风力发电系统的并网技术,主要有以下三种:空载并网、带独立负载并网和孤岛并网。
( ) 4、空载并网方式很好的实现了定子电压控制,是一种较为理想的实施方案。
( ) 5、双馈式风电机组的发电系统是一个高阶、非线性、强耦合的多变量系统( ) 6、直驱式风电机组整流器设计可考虑采用低成本的不控或半控型电力电子器件。
( ) 7、发电机组的一次调频作用能有效减少电网出现扰动时的频率变化幅度。
( ) 8、发电机组在AGC的作用下变化并网发电机组功率,这个调节作用称为二次调频。
( ) 9、电力系统的频率动态特性,与系统中电源备用容量大小、负荷调节效应、电源机组的机械惯性和负荷的机械惯性等有关。
( ) 10、风力发电机组与电网频率异步运行,因此不会对电力系统同步稳定性产生影响。
( ) 11、双馈式风电机组在系统频率波动时,电功率的波动与系统频率相关,对系统惯性存在很大影响。
( ) 12、当电力系统中存在大量双馈或直驱型风电机组时,系统的惯性会升高。
( ) 13、电压崩溃是电力系统受到扰动导致无功平衡被破坏,用正常调节手段无法恢复运行、局部或全网电压急剧下降的过程。
( ) 14、串联补偿主要用于减少线路电抗,补偿度一般在0.3~0.8之间。
它减少发电机与负荷的距离,提高网络的最大传输功率,是暂态稳定和电压稳定的有利措施。
( ) 15、SVC就是受电流控制的并联补偿装置。
( ) 16、对供电线路不长、负荷变动不大的中枢点采用恒调压方式。
( ) 17、电压下降时,并联电容器向电网提供的无功与电网电压平方成正比。
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2007级数控专业《机械制造基础》第三套试卷
(时间:45 分钟满分:100 分)
一、填空题(30分,每空1分)
1、常用的钻床有钻床、钻床和钻床等。
2、带传动依靠带与带轮之间的来传递运动和动力的。
型V带截面尺寸最小,型V带截面尺寸最大。
3、选择铰削余量时,应考虑铰孔的精度、、、和铰刀的类型等因素。
4、标准麻花钻主要由、和组成。
5、标准麻花钻的前角越,切削越省力。
6、孔将钻通时,进给力必须,以免进给力突然过大,造成钻头折断,或使工件随钻头转动造成事故。
7、铰削余量是指上道工序留下的方向上的加工余量。
8、普通铰刀也叫做整体式铰刀,主要用来铰削的孔。
9、锥形锪钻的锥角按工件的不同加工要求,分为、、和。
10、孔的加工包括、、和。
其中属于孔的粗加工的是,属于孔的精加工的是。
11、成组丝锥通常是M6-M24的丝锥,一组有支;M6以下及M24以上的丝锥一共有支。
12、攻螺纹时,丝锥切削刃对材料产生挤压,因此攻螺纹前直径必须大于的尺寸。
二、判断题(10分,每题1分)
1、中心距越小,带轮包角越小,带的寿命越短。
()
2、一般直径在5mm以上的钻头均需要修磨横刃。
()
3、在攻螺纹时螺纹底孔的孔口处要有倒角。
()
4、扩孔时切削阻力很大。
()
5、铰铸铁孔时加煤油润滑,也可不用。
()
6、扩孔加工是用扩孔钻对工件上已有的孔进行精加工。
()
7、铰刀不能反转,退出时也要正转。
()
8、铰孔时,铰刀从工件孔壁上切除较多的金属层。
()
9、当丝锥切削部分全部进入攻件时,不要再施加压力,只需靠丝锥自然旋进进行切削。
()10、为提高钻头的耐用度和改善孔的加工质量,钻钢件时,一般要加切削液;钻铸铁时,一般不用切削液。
()
三、选择题(20分,每题2分)
1、标准麻花钻直径小于()的做成直柄。
A 13mm
B 15mm
C 10mm
2、麻花钻主切削刃上任意一点的基面、切削平面和主截面是()的。
A 垂直
B 交叉
C 无关
3、扩孔加工常作为孔的()加工。
A 粗
B 精
C 半精
4、扩孔钻钻心较粗,可以提高(),使切削更加稳定。
A 刚性
B 塑性
C 弹性
5、铰削不通孔时,()退出铰刀,清除切屑。
A 不能
B 经常
C 偶尔
6、丝锥的柄部做有方榫,便于()。
A 切削
B 刃磨
C 夹持
7、固定式铰杠用于攻()以下的螺纹。
A M5
B M6
C M8
8、在钢和铸铁工件上分别加工同样直径的内螺纹,钢件底孔直径比铸铁底孔直
径()。
A 大0.1P
B 小0.1P
C 相等
9、根据使用方式的不同,可以把铰刀分为()。
A 机铰刀和手铰刀 B整体式铰刀和可调节式的铰刀C直槽铰刀和螺旋式铰刀
10、V带的根数过多,会影响每根带的受力均匀性,一般不超过()根。
A 9
B 10
C 11
四、名词解释(20分,每题5分)
1、铰孔:
2、V带的包角:
3、锪孔:
4、攻螺纹:
五、简答题(共15分)
1、划线基准一般有哪三种类型?(5分)
2、锯条安装时须注意哪些事项?(5分)
3、如何确定铰削余量?(5分)
七、计算题(5分)
在钢件上攻M12×1的不通孔螺纹,其螺纹有效深度为40mm,求底孔直径和深度各是多少?。