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Regulations require that cargo tanks carrying grades D or E liquids on tank barges be vented with（）.
A . gooseneck vents and flame screens
B . pressure-vacuum relief valves
C . branch vent lines and a vent header
D . forced draft blower
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In a web page with chechboxes you need to write e jquery that retruns the number checked checkboxes.（）
A . var n = $（“input：checked”）.length；
B . var n = $（“：input， ：checked”）.length；
C . var n = $（“input：selected”）.length；
D . var n = $（“：input， ：selected”）.length；
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在ND上出现“TERR RANG DISAGREE”，表示（）。
A . GPWS量程与本侧的EFIS控制板所选量程不一致
B . GPWS量程与对侧的EFIS控制板所选量程不一致
C . GPWS量程与本侧的EFIS控制板所选量程及FMC量程不一致
D . EFIS控制板所选量程与FMC量程不一致
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Before the authors explain the reasons why historians disagree, they give different definitions of history.
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Criminal law deals with certain forms of conduct for which the state reserves punishment.e.g.( ).
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I disagree with your view that the schedule is unimportant. I think that ___ is very much to the point.
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Some historians attribute the Holocaust to the following reasons except _________.
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The term e-business is connected with retailing and describes company to consumer communication using the Internet.
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A stock with a high P/E ratio is a better investment than one with a lower P/E ratio.
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(8) Computers should never have been invented.To what extent do you agree or disagree with this statement?
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The e-government market would enjoy rapid growth together with many issues except ______.
A．the trend towards outsourcing tasks
B．slower development of SMEs
C．plentiful business opportunities
D．working with industry in private-public partnerships
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The term e-business and e-commerce，often confused with one another，are same．（）
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当速度带下部出现IAS DISAGREE字符时，表示
A．速度带指示故障
B．ADC速度信号无效
C．左右PFD的速度指示相差5节
D．PFD无效的速度指示
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A with B.estimated C.inexhaustible D.remains E.use
People have been making_____1 of these natural supplies for thousands of years._____2 the development of technology and the increase of the population,the amount and range of materials.It is ____3 that this trend will continue in the years to come.However,natural resource are not____4.Some resources are already nearly used up.For example,the end of the world’s fuel is already within sight.Such an essential daily item as water is in short supply in many parts of the world.We can no longer thoughtlessly use many resources provided by nature.We must learn to conserve what ____5.
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（） he disagrees with us.
A．What; that
B．That; what
C．Why; that
D．lf; what
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When a verbal message and a nonverbal message disagree with each other, most of the time we()
A.believe the verbal message
B.believe the nonverbal message
C.believe both of the two kinds of languages
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At present some people claim that we should not believe journalists because what they say in their report might not be true. Do you agree or disagree with this viewpoint？ Write an essay of about 400 words on the following topic:
THE QUALITIES OF A JOURNALIST
In the first part of your writing you should present your thesis statement, and in the second part you should support the thesis statement with appropriate details. In the last part you should bring what you have written to a natural conclusion or a summary.
Marks will be awarded for content, organization, grammar and appropriacy. Failure to follow the above instructions may result in a loss of marks.
Write your composition on ANSWER SHEET FOUR.
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In e-commerce, supplier interacts with （)A．manufacturerB．customerC． shipment provider.D．di
In e-commerce, supplier interacts with ()
A．manufacturer
B．customer
C． shipment provider.
D．distributors.
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I don't think she'd get angry if you were a Little more （) when you disagreed with her on matters of child rearing.
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Communicating via E-mail is by far the most common Internet activity. You can （1) with any
Communicating via E-mail is by far the most common Internet activity. You can (1) with anyone in the world who has an Internet address or E-mail (2) with a system connection to the Internet. All you need is (3) the Internet and an E-mail program Two of the most widely used E-mail programs are Microsoft's (4) and Netscape's Navigator. A typical E-mail message has three basic (5) ：header, message, and signature.
A．connect
B．exchange
C．communicate
D．game
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Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory. On the other hand, you can disprove a theory by finding even a single observation that disagrees with the predictions of the theory. As philosopher of science, Karl Popper has emphasized a good theory is characterized by the fact that it makes a number of predictions that could in principle be disproved or falsified by observation. Each time new experiments are observed to agree with the predictions the theory survives, and our confidence in it is increased; but if ever a new observation is found to disagree, we have to abandon or modify the theory. At least that is what is supposed to happen, but you can always question the competence of the person who carried out the observation.
In practice, what often happens is that a new theory is devised that is really an extension of the previous theory. For example, very accurate observations of the planet Mercury revealed a small difference between its motion and the predictions of Newton's theory of gravity. Einstein's general theory of relativity predicted a slightly different motion from Newton's theory. The fact that Einstein's predictions matched what was seen, while Newton's did not, was one of the crucial confirmations of the new theory. However, we still use Newton's theory for all practical purposes because the difference between its predictions and those of general relativity is very small in the situations that we normally deal with. (Newton's theory also. has the great advantage that it is much simpler to work with than Einstein's ! )
It turns out to be very difficult to devise a theory to describe the universe all in one go. Instead, we break the problem up into bits and invent a number of partial theories. Each of these partial theories describes and predicts a certain limited class of observations, neglecting the effects of other quantities, or representing them by simple sets of numbers. It may be that this approach is completely wrong. If everything in the universe depends on everything else in a fundamental way, it might be impossible to get close to a full solution by investigating parts of the problem in isolation. Nevertheless, it is certainly the way that we have made progress in the past. The classic example again is the Newtonian theory of gravity, which tells us that the gravitational force between two bodies depends only on one number associated with each body, its mass, but is otherwise independent of what the bodies are made of. Thus one does not need to have a theory of the structure and constitution of the sun and the planets in order to calculate their orbits:
Today scientists describe the universe in terms of two basic partial theories-the general theory of relativity and quantum mechanics. They are the great intellectual achievements of the first half of this century. Unfortunately, however, these two theories are known to be inconsistent with each other-they cannot both be correct. One of the major endeavours in physics today, is the search for a new theory that will incorporate them both-a quantum theory of gravity. We do not yet have such a theory, and we may still be long way from having one, but we do already know many of the properties that it must have.
According to the passage, why can't any physical theory be permanently established？
A．Such a theory is only suggested as a possible way of explaining an idea.
B．The person proposing such a theory may be incompetent.
C．Observations always disagree with predictions.
D．Observations are always falsified by predictions.
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◑任何一种截词检索，都隐含着布尔逻辑检索的()运算◑A、and◑B、or◑C、not◑D、with◑E、near
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Historians are still mystified by the question____ some ancient civilizations disappeared suddenly in history.
A．that
B．how
C．is how
D．that is
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When a verbal message and a nonverbal message disagree with each other, most of the time _________.
A.believe the verbal message
B.believe the nonverbal message
C.believe both of the two kinds of languages
