单选题If sludge accumulates on the underside of a diesel engine piston, it will（）Acause blow-byBchemically attack the piston skirtCform an emulsion of lube oil and waterDraise the piston temperature
单选题
If sludge accumulates on the underside of a diesel engine piston, it will（）
A
cause blow-by
B
chemically attack the piston skirt
C
form an emulsion of lube oil and water
D
raise the piston temperature
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