单选题In a diesel engine, blow-by is a result of combustion gases leaking into the crankcase past the （）Awrist pin bushingsBcompression ringsCcylinder liner sealsDcylinder liner sealing ring
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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