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單項選擇題

Thermocouple pyrometers are used on large, main propulsion diesel engines to indicate the temperature of the（）

A.cooling water leaving each cylinder
B.fuel oil entering the injector
C.exhaust gases at various locations
D.lube oil at the bearing supplies

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單項選擇題

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

單項選擇題

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