51题库考试学习网
最新考题
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鄂破机运转时严禁做任何调整、清理或检修工作。
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选前准备包括：破碎、筛分、磨矿、（）。A、磁选B、筛选C、分级
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综采工作面两顺槽超前支护必须保持成排、成行，其直线偏差不得超过（）。A、±100毫米B、±50毫米C、±20毫米
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H8800破碎机PT3压力变送器的测量功能及控制功能是什么？
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采掘工作面的进风和回风不得经过采空区和冒顶区。
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巷道掘进过程中的锚杆预紧力矩的抽检要对当班施工的顶、帮锚杆各抽样一组，一组为（）根。A、2B、3C、5D、10
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（）和磨矿分级是矿石选别前必须进行的准备作业。
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煤在脱水、脱泥、脱介质时，所用振动筛的筛面倾角为（）。A、00B、50C、100D、150
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选择性破碎机又称（）A、颚式破碎机B、齿辊式破碎机C、滚筒式破碎机D、冲击式破碎机
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给矿多时，待破碎腔内的矿石碎完以后，再开动（），但是这时不准碎矿机停止运转。
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问答题Practice 3 It used to be said that English people take their pleasures sadly. No doubt this would still be true if they had any pleasures to take, but the price of alcohol and tobacco in my country has provided sufficient external causes for melancholy. I have sometimes thought that the habit of taking pleasures sadly has crossed the Atlantic. And I have wondered what it is that makes so many English-speaking people somber in their outlook in spite of good health and a good income. In the course of my travels in America I have been impressed by a kind of fundamental malaise which seems to me extremely common and which poses difficult problems for the social reformer. Most social reformers have held the opinion that, if poverty were abolished and there were no more economic insecurity, the millennium would have arrived. But when I look at the faces of people in opulent cars, whether in your country or in mine, I do not see that look of radiant happiness which the aforesaid social reformers had led me to expect. In nine cases out of ten, I see instead a look of boredom and discontent and an almost frantic longing for something that might tickle the jaded palate. But it is not only the very rich who suffer in this way. Professional men very frequently feel hopelessly thwarted. There is something that they long to do or some public object that they long to work for. But if they were to indulge their wishes in these respects, they fear that they would lose their livelihood. Their wives are equally unsatisfied, for their neighbor, Mrs. So-and-So, has gone ahead more quickly, has a better car, a larger apartment and grander friends. Life for almost everybody is a long competitive struggle where very few can win the race. and those who do not win are unhappy. On social occasions when it is de rigueur to seem cheerful, the necessary demeanor is stimulated by alcohol. But the gaiety does not ring true and anybody who had drunk too much is apt to lapse into lachrymose melancholy.
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问答题Practice 10 中国五千年的历史和文化深深地在中国人的心中根植了一种强烈的民族意识，这就是中国必须统一。中国政府对于国际社会普遍奉行一个中国政策表示赞赏。我们一贯认为，联合国的所有成员国，都应遵守《联合国宪章》的宗旨、原则及有关联合国决议，不以任何方式支持台湾加入联合国及只能由主权国家参加的其他国际组织。 凡是与中国建交的国家，都应本着互相尊重主权和领土完整、互不干涉内政的原则，不以任何形式或借口向台湾出售武器，或帮助台湾生产武器。 中国政府希望国际社会始终如一地奉行一个中国政策，希望美国政府切实履行中美三个联合公报关于台湾问题的各项原则和自己做出的坚持一个中国政策的庄严承诺。
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单选题What do you know from the second paragraph?ACorrective justice tries to preserve the idea of equal opportunity for each individual to realize the best that is in him.BJustice is not to heal the individual.CModern jurists aim to abandon the concept of equality.DJustice is to get even with him.
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单选题Mr. Verenda Smith is most probably a.Agovernmental employee working at the Federation of Tax AdministratorsBfree-lance PR officer representing the Federation of Tax AdministratorsCFederation of Tax Administrators employee dealing with the governmentDPR officer running between the government and the Federation of Tax Administrator:
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单选题Which of the following is true?AAll states are penalizing bars for serving customers too many drinks.BNew laws have led to decline in fatalities in many areas.CNational prohibition of alcohol stop drinking.DThe 13 years of national prohibition of alcohol began before 1919.
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单选题The word “tanked” underlined in Paragraph 1 means.AshrankBprotectedCcoveredDboomed
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单选题She was so _____ in the book she was reading that she didn’t notice me come into the room.AimpressedBmeditatedCfascinatedDengrossed
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问答题Practice 4中国的旅游业 中国是一个地域辽阔，有着数千年悠久历史的多民族国家，有着秀丽的自然风光、众多的名胜古迹和丰富多彩的灿烂文化，旅游资源十分丰富。改革开放以来，中国经济以年平均近10％的速度持续增长，各项事业蓬勃发展，人民生活水平显著提高，为旅游业的兴旺奠定了坚实的基础。中国政治稳定，经济发展，市场繁荣，中国政府坚持对外开放积极发展与世界各国的关系，也为旅游业的发展创造了极为有利的条件。中国政府十分重视旅游业的发展，将旅游业作为第三产业的重点，不断开发旅游资源，改善旅游设施，提高服务质量，促进了国际国内旅游业的快速发展。随着中国人民生活水平的提高，我国到国外旅行的人数也逐年增多，为国际旅游业的发展增添了新的活力。
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单选题Which of the following is true of DHL according to the passage?AIt cooperates with TNT Skypack.BIt is showing signs of exhaustion.CIt might have a leading position in the international courier business.DIt has an annual growth rate of 5 %.
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单选题The part of the sentence: his ability to provide competent daytime services “was compromised” may mean.Ahis being unable to provide competent daytime servicesBhis ability to provide competent daytime services was discreditedChis qualification as a doctor was suspectedDhis NHS practice is no more than a cheat to the patients
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单选题According to the passage, social phobia.Acause patients to fear the general publicBlead patients to be afraid of societyCare classified to one of the three broad categoriesDcan result in paralyzing effect to patients
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单选题Researchers think that it is ______.Asafe to eat fresh fishBdangerous to get close to the algaeCsafe to be near the algaeDdangerous to expose the algae
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单选题If seller fails to provide good title, the contract will become null and ______.AvacantBvoidCbrokeDbubble
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问答题Passage 2 Is there something as truth? For good many centuries “the search for truth” has been 1 _ the noblest activity of the human mind, but the seekers after truth have come to such 2 conclusions that it often seems that very little progress has been made. 3 , there are many people who feel that we are actually going backward 4 our knowledge. They 5 , often contemptuously, that we have more “knowledge” than our ancestors, but they think we are farther from the truth than ever, or even that we have 6 the truth that we once possessed. If people look for anything long enough without finding it, the question naturally arises 7 the thing is really there to find. You have seen a picture of an animal with a lion’s head, a goat’s body, and a serpent’s tall and maybe an eagle’s wings for good 8 . There is plenty of evidence that each part of this animal 9 -but there is no 10 evidence that the parts ever occur in this combination. It is at least 11 that the seekers after “truth” have made a similar mistake and invented a（n） 12 combination. It is 13 to consider that the noun truth comes from the adjective true, and that the Latin world for truth, verities, also comes form an adjective, versus. In both languages the notion of true -accurate, 14 to facts-seems to have developed before the notion of truth. We cannot definitely prove this, 15 even older words meaning “truth” may have been forgotten, but it seems 16 . If you want to find out whether a man has told the truth, you 17 his words with facts. If they 18 , you decide that his statement was true. You may then say either that his words were true or that he spoke the truth－but you cannot simply 19 words to find out whether there is something called truth in them. Your second statement is merely a grammatical 20 of the first.1. A. regarded B. considered C. pondered D. referred2. A. illegal B. identical C. different D. profound3. A. However B. Nevertheless C. In fact D. In contrast4. A. to abandon B. to derive C. to enrich D. to accumulate5. A. confess B. realize C. admit D. reveal6. A. found B. missed C. lost D. enriched7. A. while B. that C. when D. whether8. A. measure B. luck C. reason D. sense9. A. endures B. exists C. prevails D. emerges10. A. appropriate B. unique C. reliable D. dependent11. A. informative B. thoughtful C. considerable D. conceivable12. A. unbelievable B. imaginary C. impressive D. idealized13. A. enlightening B. delighting C. refreshing D. distressing14. A. conforming B. complying C. matching D. resembling15. A. although B. since C. if D. therefore16. A. reasonable B. inevitable C. incredible D. distinguish17. A. Separate B. discern C. compare D. distinguish18. A. suit B. fit C. vary D. identify19. A. survey B. audit C. examine D. investigate20. A. distinction B. deformation C. specification D. variation
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单选题Going to the moon is an example of .AAmerica’s dreams and creativityBAmerica’s childish and queer behaviorCwhy America hasn’t grown upDwhy America is considered as the greatest country in the world
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单选题Going to the moon is an example of .AAmerica’s dreams and creativityBAmerica’s childish and queer behaviorCwhy America hasn’t grown upDwhy America is considered as the greatest country in the world
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单选题If you have phobia in general sense,.Ayou should get a specific object to fight back all other objects of fearBit is beneficial for you to decide a single object of fearCa single object you choose as a phobia may help stop other fearsDa single object you choose as a phobia can stand for fear in your life
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单选题He has just finished fixing the door, and it looks as though it is a very hard job.Ait must have beenBit wasCto beDit must be
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问答题Practice 5美元贬值有利于全球经济 近年来，在全球经济强劲增长的同时，国际贸易失衡也达到了极其严重的程度，这加剧了美元的波动。美元贬值过快可能造成全球经济的不稳定。不过，美元逐步贬值有助于解决贸易失衡问题。当然，这只是更全面解决问题的步骤之一。 一周来，美元汇率出现了剧烈波动。美元与欧元的比价下跌了3％，达到了20个月来的最低点。 全球经济保持长期健康发展，需要美元有所贬值。简而言之，贸易失衡问题与各国过于依赖快速增长的美国需求有关。美国是唯一需求增长速度长期超过经济产出增长速度的大国，这对全世界，特别是东亚提供相当大的刺激，但这种刺激最终是不可持续的。
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单选题After the cameraman had taken three or four photographs of the soldier ants, he found they had ______ all over his feet.AgatheredBflockedCcrowdedDswarmed
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单选题What do you know from the second paragraph?ACorrective justice tries to preserve the idea of equal opportunity for each individual to realize the best that is in him.BJustice is not to heal the individual.CModern jurists aim to abandon the concept of equality.DJustice is to get even with him.
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单选题The insects of this kind can ______ the color of their background so that enemies cannot see them.Aturn onBput onCtake onDhold on
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问答题Practice 7扶持农业发展 我们必须加大对农业的支持力度。采取符合世贸组织规则的措施，努力维护农民利益。增加对农业和农村基础设施建设投资，改善生产生活条件和生态环境。重点支持节水灌溉、人畜饮水、农村沼气、农村水电、乡村道路和草场围栏等设施建设。要在农业科研、技术推广、病虫害防治、信息咨询和农民培训等方面加强对农业的支持。特别要加大对粮食主产区的支持力度。改进金融对农业的服务。深化农村信用社改革。进一步搞好农村扶贫开发，多渠道增加扶贫资金，扩大以工代赈规模。加大对灾区和特困地区的支持，减免农、牧业税，并真正落到实处。积极帮助农村特困户和优抚对象解决实际困难。
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问答题Practice 6Why Do We Dream? Our dreams may affect our lives (and vice versa) more than we ever realized, says new research. For 11 years, a 58-year-old anthropologist kept a journal of nearly 500 dreams by a man. By analyzing color patterns in the dreams, Arizona-based researcher Robert Hoss could accurately predict certain things about the man’s emotional state. Hoss correctly identified two separate years when the man experienced crises in his life. The anthropologist confirmed that in1997 he had clashed with a colleague over a management issue, and in 2003 he’d had a falling out with a friend that left deep emotional scars. How was Hoss able to gauge the dreamer’s turmoil? “The clues were in the colors,” he says. The anthropologist’s dominant dream hues were reds and blacks, which spiked during difficult times. “Even without knowing the events in his life,” Hoss observes, “we accurately determined the emotional states based on those colors in his dreams.” Hoss is among a growing group of researchers who, thanks to cutting-edge medical technology and innovative psychological research, are beginning to decipher the secrets hidden in our dreams and the role dreaming plays in our lives. A look at some of their latest discoveries can give us new insights into the language of dreams. Dreams are a way for the subconscious to communicate with the conscious mind. Dreaming of something you’re worried about, researchers say, is the brain’s way of helping you rehearse for a disaster in case it occurs. Dreaming of a challenge, like giving a presentation at work or playing sports, can enhance your performance. And cognitive neuroscientists have discovered that dreams and the rapid eye movement (REM) that happens while you’re dreaming are linked to your ability to learn and remember. Dreaming is a “mood regulatory system,” says Rosalind Cartwright, PhD, chairman of the psychology department at Rush University Medical Center in Chicago. She’s found that dreams help people work through the day’s emotional quandaries. “It’s like having a built-in therapist,” says Cartwright. While we sleep, dreams compare new emotional experience to old memories, creating plaid-like patterns of old images laid on top of new ones. As she puts it, “You may wake up and think, what was Uncle Harry doing in my dream? I haven’t seen him for 50 years. But the old and new images are emotionally related.” It’s the job of the conscious mind to figure out the relationship. In fact, dream emotions can help therapists treat patients undergoing traumatic life events. In a new study of 30 recently divorced adults, Cartwright tracked their dreams over a five-month period, measuring their feelings toward their ex-spouses. She discovered that those who were angriest at the spouse while dreaming had the best chance of successfully coping with divorce. “If their dreams were bland,” Cartwright says, “they hadn’t started to work through their emotions and deal with the divorce.” For therapists, this finding will help determine whether divorced men or women need counseling or have already dreamed their troubles away.
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问答题Practice 14 中国传统文化既是中华民族悠久历史的结晶，也是中华民族对于全人类的伟大贡献。独具特色的语言文字，浩如烟海的文化典籍，嘉惠世界的科技工艺，精彩纷呈的文学艺术，充满智慧的哲学宗教，完备深刻的伦理道德等，共同构成了中国传统文化的基本内容。中国传统文化固然是我们从先辈那里继承下来的丰厚遗产，但又并不仅是陈列在博物馆里的文物展品。它有着鲜活的生命力。传统文化所蕴涵的思维方式、价值观念和行为准则等内容，无时无刻不在影响制约着今天的中国人，为我们开创新的文化提供着历史依据和现实基础。
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单选题Since man can now create radioactive elements, there is nothing he can do to reduce their radioactivity.AAsBWhetherCWhileDNow that
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单选题What is the primary purpose of this passage?ATo alert people to the dangers posed by the sun.BTo discuss conditions on earth in the far future.CTo present a theory about red giant stars.DTo describe changes that the sun will go through.
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单选题Louis Pasteur is often credited with founding the science of bacteriology.Aagreed withBattributed withCconfided inDput up with
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问答题Passage 1 Who talks more, women or men? The seemingly contradictory evidence is 1 by the difference what I call public and private speaking. More men feel comfortable doing “public speaking”, 2 more women feel comfortable doing “private” speaking. Another way of capturing these differences is by using the 3 report-talk and rapport （协调关系） -talk. For most women, the language of conversations is 4 a language of rapport: a way of establishing connections and negotiating relationships. Emphasis is 5 on displaying similarities and 6 experiences. From childhood, girls criticize peers who try to 7 or appear better than others. People feel their closest connections at home, or 8 setting 9 they feel at home-with one or a few people they feel close 10 and comfortable about-in other words, during private speaking. But 11 the most public situations can be approached like private speaking. For most men, talk is primarily a means to 12 independence and negotiate and maintain status in a hierarchical social order. 13 is done by exhibiting knowledge and skill, and by 14 center stage through verbal performance such as storytelling, joking, or 15 information. From childhood, men learn to use talking as a way to get and keep 16 . 17 _they are more comfortable speaking in larger groups 18 people they know less well, in the broadest 19 , “public speaking”. But even the most private situations can be approached like public speaking, more like giving a report _20__ establishing rapport.1. A. compromised B. reckoned C. reinforced D. reconciled2. A. when B. while C. since D. if3. A. dictation B. descriptions C. terms D. preface4. A. regularly B. specifically C. approximately D. primarily5. A. placed B. based C. positioned D. founded6. A. communicating B. contrasting C. paralleling D. matching7. A. figure out B. stand out C. show around D. make out8. A. on B. at C. under D. in9. A. what B. where C. which D. that10. A. to B. by C. with D. of11. A. even B. even C. though D. despite12. A. preserve B. reserve C. conserve D. persevere13. A. What B. This C. Which D. How14. A. holding B. exhibiting C. standing D. playing15. A. distinguishing B. transporting C. discriminating D. imparting16. A. attention B. fascination C. demonstration D. status17. A. Still B. But C. Yet D. So18. A. made up of B. consisted of C. accommodated by D. formed by19. A. way B. sense C. scope D. range20. A. rather than B. more than C. less than D. than
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单选题A work might be made of widely diverse and even discordant elements.AdissimilarBunappealingCunreliableDdistinctive
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