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（请给出正确答案）
A.①②
B.②③
C.①②③
D.②
答案
C、①②③
更多“Which of the following will be the advantage of a centrifugal pump as compared with a reciprocating …”相关的问题
第1题
, yet it is today an issue around in which controversy flourishes. At each stage of their school lives children are faced with exams: exams to enter junior middle school, senior middle school, vocational school, colleges and universities. As a result of having constantly to think of these hurdles facing them children find themselves under constant pressure, unable to take time off from studying exam-oriented subjects to relax with friends or to develop other interests. Within school the concentration on exam success leads to the neglect of courses which are not central to the examinations and a method of teaching and learning which emphasizes training the ability to do well in tests but neglects developing the ability to think creatively.
Despite such criticisms the examination system still has its defenders. Without it, they argue, how can we test students' abilities and evaluate the effectiveness of teachers and schools？ They believe that they provide the only objective way of selecting students and reduce the exercise of unfair back-door practices to gain advantage for children on the basis of influence or corruption. Examinations are also felt to offer the impetus to students to master their subject in a way in which they otherwise might not. "While too much anxiety can be a bad thing, a little anxiety can stimulate students to learn better than if left without any test to pass," says Li Jie, a leading advocate of the value of testing. "I can remember things now which give me great pleasure which I doubt I would have learned at the time if I had not had to do so for the examinations."
57. Which of the following statements about examinations in China is correct？
[A] People can make money out of examinations.
[B] Only students of today have to take examinations.
[C] Students have to learn more about history than about any other subjects.
[D] People have different opinions concerning the value of examinations.
58. What is a possible result if students pay too much attention to examinations？
[A] Students neglect those exam-oriented subjects.
[B] Students are unable to relax with friends or to develop other interests.
[C] Teachers neglect the training of the students' ability to do well in tests.
[D] Students only pay attention to the development of their ability to think creatively.
59. Which of the following has NOT been mentioned as the advantage of examinations？
[A] Examinations are the only objective way of selecting students.
[B] Examinations are the only objective way to eliminate the problem of corruption.
[C] Examinations can tell us that too much anxiety can be a bad thing.
[D] Examinations can better stimulate students to study.
60. According to the passage, why are some people against exams？
[A] They are meaningless.
[B] They will make students learn something useless.
[C] They are believed to cause stress for the students.
[D] They are not related to the reality of life.
61. Which of the following is an acceptable summary of the organization of this passage？
[A] Discussing a problem in education.
[B] Refuting a long held opinion.
[C] Persuading people to believe an idea.
[D] Presenting a controversial issue and arguments from both sides.
第2题
31. With what topic is the passage mainly concerned？
A. Mechanisms for safer navigation.
B. The economic structure of the marketplace.
C. A specific group of commodities.
D.The advantage of lowering taxes.
32. Which of the following would NOT be an example of a public good as described in the passage？
A.taxi.
B. A bridge.
C. A fire truck.
D. A stoplight.
33. Which of the following can best replace the underlined word “holds”？
A. has
B. is
C. grasps
D. carries
34. According to the passage, finding out the social costs of a public good is a ________.
A. difficult procedure
B. daily duty
C. matter of personal judgement
D. citizen’s responsibility
第3题
As an individual and societal resource, information has some interesting characteristics that separate it from the traditional notions of economic resources. Unlike other resources, information is expansive, with limits apparently imposed only by time and human cognitive capabilities. Its expansiveness is attributable to the following: (1) it is naturally diffusive; (2) it reproduces rather than being consumed through use; and (3) it can' be shared only, not exchanged in transactions. At the same time, information is compressible, both syntactically and semantically.
The second perception of information is that it is an economic commodity, which helps to stimulate the worldwide growth of a new segment of national economies-the information service sector. Taking advantage of the properties of information and building on the perception of its individual and societal utility and value, this sector provides a broad range of information products and services. By 1992 the market share of the U.S. information service sector had grown to about $ 25 billion. This was equivalent to about one-seventh of the country's computer market, which, in turn, represented roughly 40 percent of the global market in computers in that year. However, the probable convergence of computers and television (which constitutes a market share 100 times larger than computers) and its impact on information services, entertainment, and education are likely to restructure the respective market shares of the information industry before the onset of the 21st century.
The first paragraph is mainly about ______.
A．the remarkable rise in information-processing activities
B．a sharp increase in information-intensive activities
C．information as an economic resource
D．the birth of information society
第4题
While all entomologists (昆虫学家) are all agreed that war is instinctive with ants, it is encouraging to note that not all anthropologists (人类学家) and biologists are agreed that war is instinctive with men. Those who lean on experience, of course, find everything in man's history to indicate that war is locked up within his nature. But a broader and more generous, certainly more philosophical, view is held by those scientists who claim that evidence of a war instinct in men is incomplete and misleading, and that man does have within him the power of abolishing (废除) war. Julian Huxley, the English biologist, draws a sharp distinction between human nature and expression of human nature. Thus war is not a reflection but an expression of man's nature.
Moreover, the expression may change, as the factors which lead to war may change. "In men, as in ants, war in any serious sense is bound up with the existence of accumulations of property to fight about... As for human nature, it contains no specific war instinct, as does the nature of harvester ants. There is in man's makeup a general aggressive tendency, but this, like all other human urges, is not a specific and unvarying instinct; it can be molded (塑造) into the most varied forms."
But even if this gives us a reassuring answer to the question -- is war inevitable because of man's nature？ -- it still leaves unanswered the question concerning the causes leading up to war. The expression of man's nature will continue to be warlike if the same conditions are continued that have prompted warlike expressions in him in the past. And since man's survival on earth is now absolutely dependent on his ability to avoid a new war, he is faced with the so-far insoluble problem of eliminating those causes.
Which of the following is NOT TRUE according to the passage？
A．There are different factors which may lead to war.
B．War has been rooted in and will develop with human history.
C．Both men and ants maintain complex social organizations.
D．Only men and ants have developed and practiced the art of war.
第5题
For one, we have made getting to Europe easy. Systemwide, we serve nine European cities. From New York, we fly nonstop to Paris, Frankfurt and Zurich, with continuing service to Geneva.
Second, we have designed these vacation package tours the way Americans like to travel. We have picked hotels that give you the flavor of Europe while providing real value for your money.
We Americans have always like making up our own minds. We have tours by escorted （护卫）motor coach or your own rental car. And land packages in Paris that start as low as 299—1289.
Another advantage of our fly-away vacations is that they are at a set US price. You needn’t worry about the changes in European currency. Then there is our fly-away vacation warranty. It’s your assurance that Americans stand behind your fly-away vacations.
You will find all the details of our warranty and of our European fly-away vacations in two free color brochures. Just call your travel agent or America toll-free at (800) 433-7300 to get yours.
* Restrictions：Price is valid through 10/31/88 and is per person based on double occupancy for 6 nights. Price is subject to change without notice and does not include air fare, taxes or surcharges. Hotel subject to availability on certain dates. Warranty details available upon request.
Which of the following is TRUE according to the passage?
A.The price of the fly-away vacation is fixed.
B.Price is always valid, so you do not need to worry.
C.During the tour, there is no other type of tours.
D.There are only a few stops during the tour.
第6题
1.What does “nothing is further from the truth” mean？
A、 Something. is completely untrue.
B、 Something is completely true.
C、 We can find out the truth.
D、 We cannot find out the truth.
2.What are the secrets to happiness in the author’s mind？
A、 successful work
B、 contribution to other’happiness
C、 honest effort
D、 all of the above.
3.Which of the following is not dishonest means for wealth？
A、 lottery winning
B、 gambling winnings
C、 hard work
D、 taking advantage of others
4.What does the sentence “There is no way to happiness. Happiness is the way.” mean according to the passage？
A、 Happiness is not an end; it is a process.
B、 People do not know how to get happiness.
C、 It is hard to get happiness.
D、 Happiness is what you feel.
5.What is the meaning of the word “unfulfilled”？
A、 uncontrolable
B、 impolite
C、 dissatisfied
D、 abnormal
第7题
The lack of importance attached to human-resource management can be seen in the corporate hierarchy. In an American firm the chief financial officer is almost always second in command. The post of head of human-resource management is usually a specialized job, off at the edge of the corporate hierarchy. The executive who holds it is never consulted on major strategic decisions and has no chance to move up to Chief Executive Officer (CEO). By way of contrast, in Japan the head of human-resource management is central — usually the second most important executive, after the CEO, in the firm's hierarchy.
While American firms often talk about the vast amounts spent on training their work forces, in fact they invest less in the skills of their employees than do either Japanese or German firms. The money they do invest is also more highly concentrated on professional and managerial employees. And the limited investments that are made in training workers are also much more narrowly focused on the specific skills necessary to do the next job-rather than on the basic background skills that make it possible to absorb new technologies.
As a result, problems emerge when new breakthrough technologies arrive. If American workers, for example, take much longer to learn how to operate new flexible manufacturing stations than workers in Germany (as they do), the, effective cost of those stations is lower in Germany than it is in the United States. More time is required before equipment is up and running at capacity, and the need for extensive retraining generates costs and creates bottlenecks that limit the speed with which new equipment can be employed. The result is a slower pace of technological change. And in the end the skills of the bottom half of the population affect the wages of the top half. If the bottom half can't effectively staff the processes that have to be operated, the management and professional jobs that go with these processes will disappear.
Which of the following applies to the management of human resources in American companies？
A．They hire people at the lowest cost regardless of their skills.
B．They see the gaining of skills as their employees' own business.
C．They attach more importance to workers than to equipment.
D．They only hire skilled workers because of keen competition.
第8题
Which of the following is NOT one of the disadvantages of a longitudinal research？
A．The subjects may become irritated at repeated testing.
B．The participants in the study may not stay in one place for many years.
C．The behavior. of a subject in the study may be measured continuously for many years.
D．Social changes may be reflected in the behaviors of the subjects participating in the study.
第9题
Which of the following is an example of overgeneralization？
A.eyes
B.ears
C.sheep
D.foots
第10题
Which of the following is a common characteristic of young smokers？
A．Disobedience.
B．Laziness.
C．Lack of intelligence.
D．Vanity.
