单项选择题
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
A change in the degree of fuel atomization in a diesel ...
单项选择题A change in the degree of fuel atomization in a diesel engine would most greatly affect （）.
A.air turbulence B.fuel penetration C.fuel spray angle D.fuel injection rate
