单选题In a simple mechanical governor, the （）Acentrifugal force rotates the ball-headBflyweight centrifugal force is balanced by spring forceCflyweight centrifugal force is balanced by hydraulic pressureDspeeder spring alone actuates the fuel control rod
单选题
In a simple mechanical governor, the （）
A
centrifugal force rotates the ball-head
B
flyweight centrifugal force is balanced by spring force
C
flyweight centrifugal force is balanced by hydraulic pressure
D
speeder spring alone actuates the fuel control rod
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单选题If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will （）Ahave a larger than normal dead bandBproduce excessive speed response to a load changeCrespond slowly to any change in engine loadDstabilize engine speed at the new governor setting
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