单项选择题
A.Speed limiting governor
B.Over-speed governor
C.Over-speed trip
D.Over-speed relay
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 Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
单项选择题 “Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）