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单选题
A diesel engine crankcase ventilation system （）
A
prevents spark generation
B
removes combustible gases
C
determines the level of combustible gases
D
provides inert gas generation in crankcase
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side clearanceC
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单选题In a diesel engine, blow-by（）A
increase exhaust back pressureB
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corrosion resistant flame screensC
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crankshaftC
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flywheel
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单选题How dose water enter the crankcase of a diesel engine?（）A
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单选题If a crankcase explosion occurs in a diesel engine, which of the listed actions should be taken?（）A
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