單項(xiàng)選擇題

When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.

A.filter to remove the fuel oil
B.use the settler to remove the fuel oil
C.remove the fuel oil by centrifuging
D.drain and then renew the lube oil supply

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單項(xiàng)選擇題

The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as （）.

A.indicated horsepower
B.brake horsepower
C.net horsepower
D.friction horsepower

單項(xiàng)選擇題

How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）

A.One
B.Two
C.Four
D.Eight