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单选题
Crankcase explosions in propulsion diesel result from（）
A
the splashing of lubrication oil by the crankshaft
B
the dilution of crankcase oil with particles of combustion
C
broken fuel lines spraying oil on the crankcase
D
the ignition of unburned fuel and air in the crankcase
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考题
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As water vapor contained in blow-byC
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考题
单选题In a normally operating diesel engine, the main cause of lubricating oil contamination in the crankcase is a result of the （）.A
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Apply fire fighting water through the crankcase breatherC
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Assume that there is no damage to the crankshaft
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