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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

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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

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