单项选择题

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

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单项选择题

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

单项选择题

A.piston skirt
B.pinion
C.crosshead
D.compression rings

单项选择题

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