单项选择题
A.Plugged injector nozzles
B.Excessive fuel injection
C.Very late injection timing
D.Incorrect crankshaft clearance
单项选择题 If you were inspecting the valve springs on an auxiliary diesel engine, your best indication of impending spring failure would be （）
单项选择题 Which of the routine maintenance procedure listed is required for starting air receivers?（）
单项选择题 Which of the routine maintenance procedures listed is required for starting air receivers?（）