If sludge accumulates on the underside of a diesel engine piston, it will（）<br>A:cause blow-by<br>B:chemically attack the piston skirt<br>C:form an emulsion of lube oil and water<br>D:raise the piston temperature

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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