Most scientists and engineers find careers in three general sectors of society: colleges and universities, industries, and federal and stale agencies. Their work includes an array of activities, from the conduct of basic and applied research to the design and application of new commercial products to the operation and maintenance of large engineering systems.

A . high fuel oil viscosity B . low fuel oil temperature C . high lube oil viscosity D . energized glow plug

A . conducted through the engine block B . conducted to water cooled cylinder walls C . conducted through the piston crown D . loss to escaping exhaust gase

A . Right B . Wrong C . Not mention

A . incorrect adjustments B . dirty fuel C . broken fuel lines D . excessive vibratio

A . Diesel engine propulsion B . Diesel electric propulsion C . Steam engine propulsion D . Gas turbine propulsio

A . unavoidable B . unchangeable C . unbelievable D . unpredictable

A . must churn the oil in the sump B . is connected to the propeller shaft C . is driven at the highest RPM D . compensates for alignment variations between the engine and pinion gear

A、banjo feed B、splash feed C、gravity feed D、pressure feed

A . controlling the amount of fuel injected into the cylinders B . varying the speed of the turbocharger C . adjusting the compression ratio D . changing the timing of the fuel injection camshaft

A . Faulty thermostatic bypass valve B . Eroded zinc pencils in the heat exchanger C . Steam formation in the expansion tank D . Excessive leakage from jacket water pump seal

A．The first category. B．The second category. C．The third category. D．Another the author failed to conclude. 此题为多项选择题。

A．How high the ants can leap by using their jaws. B．How quickly the trap-jaw ants can move on the ground. C．How wonderfully the springy system in the trap-jaw ants" jaws works. D．How quickly the trap-jaw ants can grab food or enemies.

Much of opposition to The Origin of Species arose from Darwin's claim that all living creatures, including man, are somehow related. Many people were outraged by the suggestion that man shared a common ancestor with animals such as apes and monkeys. They attacked Darwin for saying that man had descended from the apes. But Darwin never actually said this. He believed that modern men and modern apes have both descended from the same ancestor. But at some time in pre-history, millions of years ago, men and apes began to develop separately, and ever since have continued to take on different characteristics. Today, more than 90 years after Darwin's death, this is the opinion which scientists continue to hold. In his works, Darwin described the progression of life from its earliest forms. First came the invertebrate-creatures without a backbone. Then invertebrates evolved into fish; fish into amphibians; amphibians into reptiles; and reptiles into birds and mammals. Fossil remains found after his death show that Darwin was right. Perhaps the most amazing fact about his theory is that he managed to work it out with the aid of only a few fossil discoveries. Fossil remains were not the only information which we now possess but which Darwin lacked. He did not know that apes have the same diseases as men; nor that they and men have the same kind of blood. Nor did he know about the modern uses of radiation which enable scientists to tell the age of fossil remains and so estimate the speed at which evolution has taken place. Which of the following best describes the passage as a whole？ A．The Origin of Species is a very significant book. B．Darwin's discoveries were proved to be right though the Origin of Species was severely attacked. C．The evolution of men has gone through a very long process. D．It was impossible for Darwin to prove his ideas only with the aid of fossils.

W: Right. They tend to major in practical fields that will assure them of good jobs later. What do foreign students consider important in choosing major？ A．How soon they will graduate. B．How much their education costs. C．What kind of job they can get later. D．Which country they Will work in.

A、that B、so that C、which

此题为多项选择题。

A.they must learn to destroy all the insects that we need B.they must be sure one insect pest is not traded for another C.research keeps them from inventing new insecticide for the crops D.research helps them find a way to kill all insects

There could be double trouble for engineers who are more likely to feel at home with electrons and bytes(信息组), and behave in highly predictable ways, than with coworkers, who often appear arbitrary and unpredictable. For those of us who have internalized the strict and measurable rules of the physical world, dealing with other people can be both disappointing and frustrating. Yet how you manage situations of conflict with your coworkers could have a significant impact on your career, often even more than your engineering prowess or your design skills. Those who deal successfully with potential conflicts are far more likely to receive added responsibilities and promotions, in addition to the pay increases and respect that come with them. On the other hand, not dealing successfully with conflict can potentially relegate you to a career backwater, with technical challenges and high pay passing you by. Why is dealing with conflict an important skill today？ It's primarily because there's more of it now than in the past. Workers of all types are more likely to speak up for their own ideas or actions, rather than follow the dictating corporate chain of command. Conflict also sometimes arises as a result of unclear company goals, or when those goals aren't shared equally by all. Rather than working for a single common good, employees and managers seek individual goals, such as promotion, job security, experience, money, and even the proverbial free lunch. Not only is actual conflict greater today, but even the potential for interpersonal conflicts in the workplace is far greater than at any time in the past. One reason for this is increased time-to-market pressures. The need to rapidly make decisions, establish an engineering direction, and meet project milestones adds elements of tension and stress to an already difficult endeavor. This makes the workplace a potential minefield for interpersonal conflict. It's especially apparent to an engineer in a position of responsibility, like a project leader or an engineering manager. For an engineer who must work with others to complete a project, the need to manage conflict can spell the difference between success and failure. Which of the following statements is true' according to the passage？ A．Minefields are becoming common in the workplace. B．Workplace conflict can arise from honest disagreements. C．Workers today are less equipped to deal with workplace conflict. D．Companies are finding new ways to deal with workplace conflict.

How should we get（8）of such waste material in such a way（9）it will not harm the（10）？ Where can we（11）distribute it？ One idea is to put this radioactive waste inside a thick container, which is（12）dropped to the deep bottom of the ocean.（13）some scientists believe that this way of（14）nuclear waste could kill fish and other living things in the oceans or interfere（15）their growth. Another way to（16）nuclear waste is to send it into space, to the sun,（17）it would be burned. Other scientists suggest that this polluting material be（18）thousands of meters under the earth’s surface. Such underground areas must be free（19）possible earthquakes. Advances are being made. But it may still be many years（20）this problem could be finally settled. 1. A .Moreover B However C Therefore D Otherwise 2. A .on B. with C. to D. in 3. A. incline B. start C. tend D. keep 4. A .drained B. dumped C. discharged D. disposed 5. A .dealt B. handled C. coped D. processed 6. A .drops off B. gives off C. leaves off D. sets off 7. A .efficient B. unfavorable C. deadly D. painful 8. A. touch B. hold C. grasp D. rid 9. A. so B. which C. that D. thus 10. A. environment B. situation C. location D. residence 11. A .reasonably B. rationally C. regularly D. safely 12. A .then B. even C. ever D. only 13. A .And B. But C. Still D. Thereby 14. A. scattering B. preserving C. containing D. discarding 15. A. in B. with C. against D. at 16. A. remove B. deliver C. transport D. spread 17. A. where B. when C. there D. while 18. A. covered B. deposited C. buried D. reserved 19. A. from B.of C. for D. about 20. A. until B. after C. before D. unless

A.Nitrogen B.Methane C.Chlorine D.Oxygen

A.In terms of B.On behalf of C.On the basis of D.in the form. of