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單項選擇題

Which of the following conditions may be attributed to a fouled turbocharger compressor inlet screen or filter?（）

A.Decreasing scavenge air pressure
B.Increasing exhaust temperatures before the turbine
C.Reduction in engine speed
D.All of the above

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單項選擇題

The rate of wear on a cylinder liner depends on the （）

A.quality of air filtration
B.effectiveness of lubrication
C.type of fuel used
D.all of the above

單項選擇題

In diesel engineering practice, the term used to express the ignition quality of a particular fuel is（）

A.cetane number
B.octane number
C.ignition index number
D.volatility point