單項(xiàng)選擇題

When monitoring diesel engine performance, the most useful instrument to use is the （）

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

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單項(xiàng)選擇題

Low compression in a diesel engine could be caused by（）

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

單項(xiàng)選擇題

The most common instrument used to measure diesel engine exhaust pressure is the （）

A.pyrometer
B.bourdon gauge
C.pneumercator
D.manometer

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