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The TS7650 Protec TIER Application is available in which one of the following Pre-setconfiguration?（）
A . 7TB / 18TB / 36TB
B . 6TB / 12TB / 24TB
C . 10TB / 20TB / 30TB
D . 12TB / 24TB / 48TB
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Fuels of high quality with their earlier ignitions will cause higher （）pressure in cylinders of a diesel engine.
A . compression
B . maximum
C . rated
D . oil
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The burning of fuel oil in a diesel engine having a high sodium content, will cause （）
A . corrosion and grooving of exhaust valves
B . corrosion and gumming of the fuel injection pump
C . salt deposits in the exhaust manifold
D . slag deposits in the fuel injection equipment
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When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.
A . increase the amount of cooling water to the condenser
B . decrease the amount of cooling water to the condenser
C . add more refrigerant to the system
D . remove some refrigerant from the system
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If a diesel engine fails to start，one of the likely causes is （）
A . low compression temperature
B . low ambient air pressure
C . high lube oil pump pressure
D . high fuel oil booster pump pressure
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Which of the following may cause that the compressor cuts off on high pressure cutout in a refrigeration plant? （） (1) faulty condensing (2) too few refrigerant (3) high discharge pressure
A . any of (1) and (3)
B . any of (1) and (2)
C . any of (2) and (3)
D . any of (1), (2) and (3)
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What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head?（）.
A . Bends in the piping
B . Slowing the pumping rate
C . Pipeline valves
D . Backing rings for pipe weld
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In the absence of external forces，adding weight on one side of a floating vessel causes the vessel to（）.
A . heel until the angle of loll is reached
B . list until the center of buoyancy is aligned vertically with the center of gravity
C . trim to the side opposite TCG until all moments are equal
D . decrease draft at the center of flotatio
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In the management of the shafting, because（） carry heavy load and caused high temperature easily, it should be paid attention.
A . the bearing near to the diesel engine
B . the intermediate bearing near to the thrust bearing
C . the intermediate bearing near to the sterntube
D . the bearing located at the middle of the diesel engine and the sterntube
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High exhaust temperatures from all of cylinder of a turbocharged, four-stroke/cycle diesel engine can be caused by an（）
A . inoperative turbocharger
B . inadequate fuel supply
C . overload on one cylinder
D . unequal load distributio
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One of the causes of ocean currents is density differences in the water. This is true because （）.
A . in an area of high density the water's surface is lower than in an area of low density
B . surface water flows from an area of high density to one of low density
C . the lesser the density gradient the freer the water is to move
D . it is the density differences that cause the currents to stay in the trough
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One of the reasons that causes oil flowed from sludge outlet of a self-cleaning purifier is （）
A . seal water supply be cut off
B . make-up water supply be cut off
C . oil outlet valve closed or not open sufficiently
D . the flow rate of oil is too much
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Which of the conditions listed would cause simultaneous high cylinder firing pressure and low exhaust temperature?（）
A . Improper fuel rack positioning
B . Lengthy opening of the exhaust valve
C . Excessively early injection timing
D . Extended light load operatio
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One remedy for a high firing pressure, in addition to a high exhaust temperature in one cylinder of a diesel engine, is to （）
A . increase scavenge air pressure
B . reduce fuel booster pump pressure
C . adjust the fuel rack
D . retard fuel injector timing
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One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
A . seal water supply be cut off
B . make up water supply be cut off
C . oil outlet valve closed or not open sufficiently
D . the flow rate of oily water is too much
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When the normal compression ratio of a diesel engine is not very high, misfiring at light loads may be caused by （）
A . overloading the engine
B . low exhaust valve lift
C . excessive cylinder cooling
D . insufficient mechanical clearance
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Can you list three kinds of cause-and-effect patterns?Pattern one: one ______, many causes; pattern two: one ______, many effects; pattern three: the causal ______.
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From a high angle
overlooking the road, we watched the two cars racing toward one another, headed
_________ a collision course.
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Most of these passengers in this flight headed for Atlanta thought it was one of minor problems.
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In the management of the shafting, because____ carry heavy load and caused high temperature easily, it should be paid attention.
A.the bearing near to the diesel engine
B.the intermediate bearing near to the thrust bearing
C.the intermediate bearing near to the sterntube
D.the bearing located at the middle of the diesel engine and the sterntube
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2：Which of the following is one of the causes of the educational innovations？
A.Efforts made by church leaders.
B.Rallies held by graduates of Harvard University.
C.Demand for a more advanced mode of teaching among the graduates of the old colleges.
D.The limitation of the range of studies.
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Every year, one student a our high school wins a scholarship that __________ one year of college.
A. improves
B. subsidizes
C. obliges
D. inflicts
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Under the influence of high temperature and much damage caused by the human, Earth and life will ______.
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Which of the following is not mentioned by the author as one of many causes of stress in the passage？
A．The boredom and frustration brought by unemployment.
B．The poorness of living space and housing shortage.
C．The stress and depression produced by sleeplessness.
D．The worry about financial and economic situation.
