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單項選擇題

The process of scavenging a two-stroke/cycle diesel engine serves to（）

A.improve fuel flow volume
B.cool the exhaust valves
C.reduce the intake air charge density
D.increase the temperature of exhaust gases

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單項選擇題

Which of the listed bearing types is an example of a solid bearing?（）

A.Piston wrist pin bushing
B.turbine bearing
C.Spring bearing
D.Diesel engine main bearing

單項選擇題

A distorted spray pattern from a fuel injector can cause a diesel engine to have （）

A.higher firing pressure
B.more power output
C.lower fuel pressure
D.less power output

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