单项选择题
A.check the pyrometer readings
B.check the crankcase oil level
C.check the fuel oil strainers
D.clean the fuel system
单项选择题 Sludge formation in a diesel engine lube oil system is caused by（）
单项选择题 A diesel engine is turned at normal cranking speed, but fails to fireThis can occur from （）
单项选择题 Which of the following statements represents the reason for rolling over a diesel engine with the cylinder indicator cocks open prior?（）