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

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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

單項(xiàng)選擇題

The function of diesel engine piston compression rings is to （）.

A.prevent piston side thrust
B.prevent engine friction losses
C.transmit heat from the piston to the cylinder liner
D.remove oil from the cylinder combustion space