单项选择题
A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of （）
A.low lube oil temperature B.low starting air temperature C.air bubbles in the fuel oil system D.water in the starting air system
单项选择题 Which of the listed failures, occurring in an automated diesel generator system, should cause an audible alarm at the engine room control station?（）
单项选择题 A diesel engine may be hard to start if the （）
单项选择题 If a diesel engine rotates slowly when cranked, but does not fire, the（）
