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單項(xiàng)選擇題

If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.

A.compression pressures are below normal
B.lube oil is diluted with fuel oil
C.cranking speed is too low
D.exhaust system is partially restricted

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單項(xiàng)選擇題

Routine monitoring of a diesel engine should include （）.

A.checking for leaks
B.checking temperatures and pressures
C.listening for abnormal noises
D.all of the above

單項(xiàng)選擇題

A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.

A.reduce the engine load
B.increase the cooling water flow
C.increase the lube oil pressure
D.adjust the fuel rack

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