单选题Diesel engine piston seizure can be caused by （）Apoor cooling of cylinder wallsBimproper cooling of the pistonCinsufficient piston lubricationDall of the above
单选题
Diesel engine piston seizure can be caused by （）
A
poor cooling of cylinder walls
B
improper cooling of the piston
C
insufficient piston lubrication
D
all of the above
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