单项选择题
The amount of fuel delivered by a unit injector is controlled by the （）
A.camshaft
B.main spring
C.rack position
D.nozzle orifice size
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相关考题
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Cast iron pistons used in large propulsion diesel engines are constructed with （）
A.not taper what so ever
B.the skirt being tapered and smaller than the crown
C.the skirt being tapered and larger than the crown
D.the crown being tapered and smaller than the skirt -
单项选择题
The major cause of trouble in a mechanical-hydraulic governor is contamination of the hydraulic fluid by （）
A.dirt
B.fuel oil
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单项选择题
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
A.Sensitivity
B.Power
C.Speed droop
D.Compensation
