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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

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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