单项选择题
The over-speed trip installed on most diesel engine will stop the engine by shutting off the （）
A.water supply B.fuel oil supply C.lube oil supply D.exhaust damper
单项选择题 The blower type crankcase ventilation system （）
单项选择题 One remedy for a high firing pressure, in addition to a high exhaust temperature in one cylinder of a diesel engine, is to （）
单项选择题 What is the best way of stopping an over-speeding diesel engine?（）
