单项选择题
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
Scale and dirt accumulation in the waterside of a lube ...
单项选择题Scale and dirt accumulation in the waterside of a lube oil cooler will be indicated by a gradual increase in the lube oil（）.
A.TBN number B.viscosity C.temperature D.foaming
