单项选择题

A pyrometer is an instrument commonly used to measure（）

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

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单项选择题

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

单项选择题

A.dwell-tachometer
B.exhaust gas pyrometer
C.fuel flow rate mete
D.exhaust gas analyzer

单项选择题

A.worn or broken cylinder liner sealing rings
B.high cooling water temperature
C.worn or broken piston rings
D.low fuel oil pressure