单项选择题
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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相关考题
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单项选择题
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 -
单项选择题
The cetane number rates fuels for diesel engines according to its （）
A.antiknock characteristics
B.ignition qualities
C.rates of vaporization
D.viscosity -
单项选择题
Diesel engine starting difficulties due to cold intake air temperatures, can be overcome by using a/an（）
A.increase in starting air pressure
B.increase in lube oil viscosity
C.compression expansion device
D.jacket water heater
