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单选题
The breaking-up of fuel as it enters a diesel engine cylinder is known as（）
A
airification
B
vaporization
C
atomization
D
gasification
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单选题If a tow-stroke/diesel engine is over-speeding due to leakage of lube oil into the cylinders, what should you do to stop the engine?（）A
Move the fuel control mechanism to the no fuel positionB
Block the fuel supply by closing the master fuel valveC
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increasing the lube oil pressureC
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单选题To successfully reduce an excessively high diesel engine exhaust gas temperature, you should （）.A
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increase the fuel rack settingD
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单选题The fuel from the bunker tanks must be treated by before entering the service tanks（）, from where the fuel enters（）A
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单选题A change in the quality of fuel atomization by a diesel engine fuel injector would be caused by a/an （）A
increase in engine speedB
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mechanical rigidity in the lube pump mechanismD
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advanced fuel ignitionC
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单选题Faulty operation of diesel engine fuel injection nozzles can be a direct cause of（）.A
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sediment in the fuel supplyC
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improper atomization of the fuel
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单选题Fuel is admitted to a diesel engine cylinder through the （）.A
intake valvesB
carburetorC
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单选题What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）A
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Heat of compressionC
CarburetorD
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单选题When fuel enters the crankcase of a diesel engine, it （）A
dilutes the lube oil and reduces its viscosityB
forms sulfuric acid in the lube oilC
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causes sludge deposits on valve stems
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单选题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 engineB
enter the engine along with the increase in the fuelC
enter the engine before the increased fuel supplyD
leave the turbocharger as a negative pulse
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dirty fuelC
broken fuel linesD
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use a higher than normal cranking speedC
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as much fuel asB
less fuel thanC
less fuel asD
more fuel than
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proper fuel meteringB
complete fuel/air mixingC
minimal fuel penetrationD
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单选题Air in the fuel lines to the fuel injection nozzles of a diesel engine will cause the engine to （）A
burn excessive amounts of lube oilB
overheat without smokingC
operate with reduce power or stopD
run away without load
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