单项选择题
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
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相关考题
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单项选择题
If a diesel engine is smoking excessively under load, the cause could be （）
A.low exhaust back pressure
B.early fuel injection in one of the cylinders
C.compression pressure in one of the cylinders
D.plugged injector holes -
单项选择题
A diesel engine emits blue exhaust smoke as a result of（）
A.cold intake air
B.excessive compression pressure
C.excessive cylinder lubrication
D.a light load -
单项选择题
Because of the close tolerances used in diesel engine fuel oil pumps, a worn plunger requires（）
A.grinding the spare plunger to the barrel
B.replacing the plunger and the barrel
C.highly polishing both the plunger and barrel
D.replacing plunger only
