单项选择题
A.quality of air filtration B.effectiveness of lubrication C.type of fuel used D.all of the above
In diesel engineering practice, the term used to expres...
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
The cetane number rates fuels for diesel engines accord...
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
Diesel engine starting difficulties due to cold intake ...
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
