单项选择题
A.starting air pressure
B.scavenge air pressure
C.over-speed trip
D.banjo oiler line
单项选择题 The speed of the turbocharger for a four-stroke/cycle diesel engine driving a generator at constant speed depends on the （）
单项选择题 The operating speed of a turbocharger is directly dependent upon（）
单项选择题 A four-stroke/cycle, 1000horsepower diesel engine fails to start at normal cranking speed with normal fuel pressure and ambient temperatureThe reason for the failure could be（）