单选题Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）Astarting the engine while hotBknurling the piston skirtCoperating the engine overheatedDscuff resistant piston rings
单选题
Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
A
starting the engine while hot
B
knurling the piston skirt
C
operating the engine overheated
D
scuff resistant piston rings
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