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单选题
In a diesel engine, blow-by is a result of combustion gases leaking into the crankcase past the （）
A
wrist pin bushings
B
compression rings
C
cylinder liner seals
D
cylinder liner sealing ring
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单选题Which of the following gases represents the greatest threat to personnel safety in an engine room where the exhaust is leaking from a diesel engine?（）A
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单选题Diesel engine blow-by is the leakage of combustion gases past the （）A
oil rings onlyB
compression and scraper ringsC
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单选题In a diesel engine, blow-by（）A
increase exhaust back pressureB
causes excessive crankcase pressureC
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decreases fuel consumption
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increased engine back pressureB
sulfuric acid corrosionC
surface pitting of the turbochargerD
moisture impingement on the turbocharger compressor blade
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cylinder blockD
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单选题The diesel engine is a type of internal combustion engine which ignites the fuel by injecting it into hot, high pressure air in a （）.A
air bottleB
air compressorC
crank caseD
combustion chamber
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fouling turbineB
fuel pump faultsC
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考题
单选题In a diesel engine, excessive cylinder liner wear will cause （） Ⅰ.increased blow-by Ⅱ.wear between the piston ring and grooveA
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both Ⅰ and Ⅱ are correctD
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考题
单选题The diesel engine is a type of （）.A
turbine engineB
gas turbineC
steam engineD
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