单项选择题
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
单项选择题 Problems with the diesel engine fuel injection pump are usually caused by（）
单项选择题 Diesel engine cylinder head test cocks are used to（）
单项选择题 A turbocharged diesel engine will have an intake manifold pressure（）
