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If the speed of a turbocharged diesel engine is maintained constant the turbocharger speed will （）
A . decrease until the engine speed increases
B . increase as the load increases
C . decrease as the load
D . increases remain unchanged
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When used in conjunction with a turbocharger, the main function of an after-cooler is to （）
A . increase the density of the cylinder air charge
B . prevent turbocharger overheating
C . liminate the need for a pre-cooler
D . remove moisture from air compressed by the turbocharger
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A few of（）are planning to drive to Beijing during the spring break.
A . we girls
B . us girls
C . girls we
D . girl
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Which of the following conditions may be attributed to a fouled turbocharger compressor inlet screen or filter?（）
A . Decreasing scavenge air pressure
B . Increasing exhaust temperatures before the turbine
C . Reduction in engine speed
D . All of the above
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If the turbocharger of a four-stroke/cycle diesel engine fails to operate, which of the following statements best describes the probable effect?（）
A . Intake manifold pressure will be high
B . Intake manifold pressure will be unaffected
C . Exhaust temperatures will be high
D . Exhaust temperatures will be low
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Which of the following statements is correct regarding a turbocharged four-stroke/cycle diesel generator?（）
A . At zero load the intake manifold pressure is greater than the exhaust manifold pressure
B . At full load the intake manifold pressure and exhaust manifold pressure are equal
C . At full load the intake manifold pressure is less than the exhaust manifold pressure
D . At full load the intake manifold pressure is greater than the exhaust manifold pressure
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The operating speed of a turbocharger is directly dependent upon（）
A . engine speed
B . engine load
C . intake manifold pressure
D . atmospheric pressure
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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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In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the （）
A . governor droop
B . speeder spring tension
C . fuel rack lag
D . load on the engine
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The power output of a turbocharged diesel engine will drop if the cooling water flow through the after-cooler is interrupted because the （）.
A . turbocharger stalls
B . exhaust pressure increases
C . air charge density decreases
D . scavenge effect increase
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The efficiency of turbocharge system is increased by fitting a charge air cooler （） the compressor.
A . inside
B . before
C . after
D . against
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Which of the following conditions can cause below normal air pressure in the intake manifold of a turbocharged diesel engine?（）
A . Excessive piston blow-by to the manifold
B . Insufficient cooling water flow
C . Accumulated water in the air boxes
D . Clogged air intake filter
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Which of the following problems can cause an above normal air temperature to develop in the intake manifold of a turbocharged and after-cooled diesel engine?（）
A . Faulty turbocharger turbine diffuser ring
B . Faulty turbocharger compressor ring
C . Insufficient cooling water flow
D . Clogged air intake filter
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After-cooling of a turbocharged diesel engine will result in （）
A . higher torque but lower brake horsepower
B . lower torque but higher brake horsepower
C . higher torque and lower brake horsepower
D . lower torque and higher brake horsepower
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A few shots of this drug cleared up the disease for _____.
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_____ the balance, we will advise you of the position in a few days.
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Before Iwent for my interview I researched the company on the Internet and talked to a few people and this strategy worked so well that after the interview Mr. Timms,the Personnel Manager, offered me the position on the spot.
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2. I ________ a few words of Turkish when I was in Istanbul.
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The power output of a turbocharged diesel engine will drop if the cooling water flow through the after-cooler is interrupted because the _____.
A.turbocharger stalls
B.exhaust pressure increases
C.air charge density decreases
D.scavenge effect increases
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We had a few__________days of rest in mountain area．
A.quiet
B.silent
C.cool
D.peace
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A．A couple of weeks with the computer first, and a few months with the word-processor later.
B．About one month with the word processor first, and a two-month, part-time period with the computer use.
C．About two months with computer first, and a one-month, part-time period with the word processor later.
D．About a two-month, part-time period with the word processor and computer.
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听力原文：Because of the decreasing sales of the products at the end of the year, the sales manager put a salesman on the spot.
(29)
A．The manager put a salesman in the spotlight.
B．The salesman had a difficult time due to his bad performance.
C．Many products have been sold at the end of the year.
D．A salesman bought fewer products than he used to do.
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When the load is increased on a turbocharged diesel engine, the amount of increased air supplied by the turbocharger will___________.
A.lag behind the increased fuel supplied to the engine
B.enter the engine along with the increase in the fuel
C.enter the engine before the increased fuel supply
D.leave the turbocharger as a negative pulse
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A few spots of turbocharger can be caused by ①crash stop of engine; ②rapid increased of engine speed.
A.① only is correct
B.② only is correct
C.both ① and ②are correct
D.neither ① or ② correct
