单选题A diesel engine piston crown can crack from （）Aexcessive piston to liner clearanceBexcessive dirt beneath the piston crown that reduces heat transferCfaulty nozzle sprayDall of the above
单选题
A diesel engine piston crown can crack from （）
A
excessive piston to liner clearance
B
excessive dirt beneath the piston crown that reduces heat transfer
C
faulty nozzle spray
D
all of the above
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