Scuffed cylinder liner surfaces in a diesel engine can result form（）<br>A:starting the engine hot<br>B:knurling the piston skirt<br>C:operating an overheated engine<br>D:using scuff resistant piston rings

Scuffed cylinder liner surfaces in a diesel engine can result form（）
A:starting the engine hot
B:knurling the piston skirt
C:operating an overheated engine
D:using scuff resistant piston rings

出自：海船船员证

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