单项选择题
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
The lower section of a piston is called the （）.A.landB....
单项选择题The lower section of a piston is called the （）.
A.land B.skirt C.crown D.plate
