单项选择题
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 （）
单项选择题 Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
单项选择题 A faulty thermostatic bypass valve, in a diesel engine cooling system, can result in （）