单选题On most diesel engines, the governor controls the output speed by （）.A controlling the amount of fuel injected into the cylindersB varying the speed of the turbochargerC adjusting the compression ratioD changing the timing of the fuel injection camshaf

Diesel engines driving alternators operating in parallel must maintain a set frequency regardless of load changes. The governor characteristic used to accomplish this is known as _______.

A.actuation

B.sensitivity

C.compensation

D.promptness

A generator is prevented from becoming motorized by the use of a/an ______.

A.over-speed trip

B.reverse power relay

C.back pressure trip

D.governor controls

For most diesel propulsion and generator engines, the over-speed trip device will stop the engine by

A.moving the governor control to stop

B.shutting off the lubricating oil supply

C.tripping the governor emergency stop lever

D.shutting off the fuel supply

A governor automatically controls engine speed by regulating ___ .

A.fuel supply

B.firing order

C.engine load

D.oil level

_____ the engines, the diesel engine is ____ used engine on board

A.Between / more commonly

B.Among / the most commonly

C.Between / not more commonly

D.Among / not the most commonly