单选题Which of the following faults would allow lube oil to enter the cooling system of a diesel engine?（）AExcessive valve train lubricationBLeaking standby oil cooler coreCExcessive lube oil pressureDExcessive lube oil in the system
单选题
Which of the following faults would allow lube oil to enter the cooling system of a diesel engine?（）
A
Excessive valve train lubrication
B
Leaking standby oil cooler core
C
Excessive lube oil pressure
D
Excessive lube oil in the system
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