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By far the greatest item of maintenance of the reciprocating air compressors concerns ().
A . the lubrication
B . the cooling
C . the moisture separation
D . the valve
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Which of the processes listed consumes the greatest amount of power while producing the greatest amount of heat?()
A . Overcoming sliding friction
B . Overcoming rolling friction
C . Overcoming fluid friction
D . Overcoming oil wedge frictio
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The winds with the greatest effect on the set,drift,and depth of the equatorial currents are the().
A . doldrums
B . horse latitudes
C . trade winds
D . prevailing westerlie
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In a compression refrigeration cycle, the temperature of the liquid refrigerant experiences its greatest decrease in the().
A . evaporator
B . compressor
C . expansion valve
D . condenser
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The pillar shape that gives the greatest strength for the least weight is the().
A . octagonal pillar
B . H Beam pillar
C . I Beam pillar
D . circular type pillar
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Among the rings of a piston the () one is subjected to the greatest load and temperature.
A . bottom
B . middle
C . top
D . none of the above
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In ship construction,keel scantlings should be the greatest().
A . at each frame
B . amidships
C . one-third the distance from the bow
D . one-third the distance from the ster
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The greatest strain,when lifting a load with the jumbo purchase,is on().
A . all of the parts,dividing the load equally
B . the hauling part because it must absorb the frictional losses of all the sheaves
C . the parts in the movable block
D . the standing part because it is directly connected to the weight
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Boxing Day has become the day of the year with the greatest revenue.
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Probably the greatest single barrier to effective communication is the
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The aim of price negotiation is onnly to make the greatest profits.
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The greatest literary achievement of the Victorian Age is its novel.
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The greatest years of the Silk Road lie in the ( ) Dynasty.
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Venice is one of the greatest tourist _________ of the world.
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According to the passage, what’s the greatest environmental challenge to human beings?
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The ( )of outer space is one of the greatest triumphs of modern science.
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Robert Burns is the greatest ( )poet.
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A floating-rate security will have the greatest duration:
A、The day before the reset date.
B、The day after the reset date.
C、never--floating-rate securities have a duration of zero.
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The feature of APT that offers the greatest potential advantage over the simple CAPM is the
A.identification of anticipated changes in production, inflation, and term structure of interest rates as key factors explaining the risk-return relationship
B.superior measurement of the risk-free rate of return over historical time periods
C.use of several factors instead of a single market index to explain the risk-return relationship
D.variability of coefficients of sensitivity to the APT factors for a given asset over time
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The author implies that the greatest source of pollution is______.
A.heavy industry
B.chemical processing plants
C.urban expansion
D.salt spray
此题为多项选择题。
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听力原文: The head of the World Health Organization says important efforts are being made to fight the world' s serious health problems. But she says gains could be lost if countries around the world do not support new health programs.
Gro Harlem Brundtland made her comments to the World Health Assembly in Geneva, Switzerland recently. She described a number of health programs expected in the coming years. However, Doctor Brundtland said the WHO' s 191 member countries must support the programs and put them into action. With this support, she said the WHO could reduce the number of deaths caused by malaria, AIDS, tuberculosis and other infectious diseases. She also said the death rate for pregnant women and babies could be reduced.
Doctor Brundtland told W-H-O members that good health is linked to economic and social development. For example, she described how smoking tobacco threatens to reduce the resources of all countries, especially developing countries. The World Health Organization estimates that four million people die each year from diseases linked to smoking. The organization expects that number to rise to ten- million a year in the next thirty years. Most of these deaths are expected in developing countries.
Which of the following infectious diseases is not mentioned in the report?
A.Malaria.
B.Enteritis.
C.AIDS.
D.Tuberculosis.
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One of the best-known proverbs must be "early to bed, early to rise, makes a man healthy, wealthy, and wise." The promises of health, wealth, and wisdom to those who join the ranks of the early retires and risers must be particularly appealing to many people in our contemporary society. There is no doubt that one of the greatest concerns of modern man is his health. It is estimated that in the United States $ 200 billion are spent on health care each year. The medical field has grown into such a big business that it employs 4.8 million people, and it appears that in many places, more staff is needed to meet the demands of the people who are concerned about their physical well-being.
Much more interest has been shown in preventive medicine in recent years. This is probably due in part to the increasing costs of medical treatment, but the writings of such people as Dr. Keneth Cooper have also played an important role. In his book Aerobics. Dr. Cooper communicated his message of the benefits of exercise so effectively that many other authors have flowed in his trail, and literally millions of readers have put on their sports shoes and taken to the highways and byways of America. A recent survey showed that over 17 million people are jogging. Many of these are so serious that they have trained themselves to run the 26 miles and 385 yards of the hard and tiring marathons that are sponsored all over the country. The last time I was in Honolulu, I was amazed to see hundreds of people, young and old, running for their lives, and I discovered many of them have run in the Hawaiian Marathon.
Exercise has also become a major part of conversation. A1 a dinner party recently, the president of a bank asked me, "You look like a runner; how far do you run each day?" A few days later when I appeared on a national television show, the host suddenly asked me if I was a regular runner. On both occasions the conversation turned to the subject of exercise and I found, as I have found whenever I have traveled recently, that this is a subject on many people's minds. Of course, there are still many people who are less than enthusiastic about exercise. They appreciate the philosophy of Robert M. Hutchins who said, "Whenever the thought of exercise occurs to me, I lie down till it passes."
The first paragraph indicated that medical workers ______.
A.are in great demand?
B.make a lot of money
C.are concerned with their own health
D.like sports more than ordinary people
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Which of the following has the greatest liquidity needs on average?
A、Investment companies.
B、Non-life insurance companies.
C、Banks.
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A buyer would face the greatest risk of default with:
A、A farmer making physical delivery on a short soybean futures position.
B、An investment bank making cash settlement on a short euro futures position.
C、A multinational firm making cash settlement on a short U.S. dollar forward contract.