單項(xiàng)選擇題

Diesel engines driving alternators operating in parallel must maintain set frequency regardless of load changesThe governor characteristic used to accomplish this is known as （）

A.actuation
B.sensitivity
C.compensation
D.thrust shaft

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單項(xiàng)選擇題

An individual injection pump is designed for variable beginning and constant ending of injectionFor diesel engines operating at constant speeds, the start of injection will（）

A.advance as the load increases
B.retard as the load increase
C.remain unchanged regardless
D.always occur at top dead center

單項(xiàng)選擇題

The purpose of the compensating adjustment used in a diesel engine hydraulic governor is to （）

A.compensate for low oil level
B.increase governor promptness
C.prevent governor hunting
D.limit engine load