单项选择题

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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热门试题

单项选择题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

单项选择题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

单项选择题The highest pressure in a diesel engine cylinder normally occurs （）.

A.at TDC
B.before TDC
C.after TDC
D.during air starting

单项选择题What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）

A.Spark plug
B.Heat of compression
C.Carburetor
D.Glow ping

单项选择题The main purpose of the piston oil scraper rings is to （）.

A.seal the space between the piston and the liner
B.reduce the amount of lube oil burned in the combustion chamber
C.transmit heat from the piston to the cylinder liner
D.damp out fluctuations of the piston side thrust