单选题If a crankcase explosion occurs in a diesel engine, you should stop the engine and（）Aimmediately open all crankcase relief portsBincrease crankcase exhauster speed to draw cool air into the engineCallow the engine to cool naturallyDincrease crank case scavenge air to remove unburned gases
单选题
If a crankcase explosion occurs in a diesel engine, you should stop the engine and（）
A
immediately open all crankcase relief ports
B
increase crankcase exhauster speed to draw cool air into the engine
C
allow the engine to cool naturally
D
increase crank case scavenge air to remove unburned gases
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