单项选择题
A.leaking exhaust valves B.an overloaded cylinder C.a clogged injector nozzle D.all of the above
In a bypass type lubrication system for a diesel engine...
单项选择题In a bypass type lubrication system for a diesel engine, the dirty oil line to the centrifuge should be taken from the （）.
A.lube oil pump suction line B.lube oil pump discharge line C.bottom of the lube oil sump D.outlet from the lube oil header
Theoretical perfect combustion in a diesel engine yield...
单项选择题Theoretical perfect combustion in a diesel engine yields by-products of （）.
A.aldehydes and carbon dioxide B.water vapor and carbon monoxide C.nitrogen and carbon monoxide D.water vapor and carbon dioxide
Which of the following devices is a common basic elemen...
单项选择题Which of the following devices is a common basic element with nearly all mechanical governors?（）
A.Power piston B.Control rack C.Weights acted on by centrifugal force D.Isochronous droop spring
