A.atmosphere
B.the fresh water
C.compressed air
D.chemical compounds
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A.fuel treatment
B.fuel combustion
C.fuel injection
D.fuel separating
A.bottle
B.injector
C.piston
D.barrel
A.a separate motor
B.a cam
C.a generator
D.a chain
A.has begun
B.takes place
C.occurs
D.happens
A.the cylinder head
B.the cross-head
C.the moving piston
D.the stationary piston
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The main purpose of the piston oil scraper rings is to （）.
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If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（）
White smoke exhausting from an operating diesel engine may indicate （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
Maximum horsepower of a diesel engine is attained （）.
Lube oil cannot be efficiently filtered if its （）.