單項(xiàng)選擇題Low compression pressure in a diesel engine is caused by()

A.low water in the expansion tank
B.improperly seated valves
C.low fuel oil pressure
D.worn or broken cylinder liner sealing rings


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1.單項(xiàng)選擇題A pyrometer is an instrument used to measure the temperature of the diesel engine()

A.exhaust
B.fuel oil
C.cooling water
D.cylinder liner

2.單項(xiàng)選擇題Low compression pressure in a diesel engine can be caused by()

A.improperly seating intake valves
B.leaking cylinder liner seal rings
C.late fuel injection timing
D.carbon deposits on the piston

4.單項(xiàng)選擇題A pyrometer is an instrument commonly used to measure()

A.cylinder pressure
B.flame intensity
C.exhaust gas temperature
D.crankshaft axial alignment

5.單項(xiàng)選擇題Worn main bearings in a diesel engine can result in ()

A.decreased compression pressure
B.increased lube oil pressure
C.lower lube oil temperature
D.excessive leakage past the piston rings

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