单项选择题
A.torque limiter B.over-speed trip C.over-speed governor D.load limit governor
Black smoke exhausting from an operating diesel engine ...
单项选择题Black smoke exhausting from an operating diesel engine can be caused by （）
A.fuel dribbling from leaking fuel injectors B.burning fuel with a high carbon content C.burning fuel with a high vanadium content D.burning fuel with a lower sulphur content
White smoke exhausting from a diesel engine can be caus...
单项选择题White smoke exhausting from a diesel engine can be caused by a （）
A.high combustion temperature B.high compression pressure C.cracked cylinder liner D.fuel with a high vanadium content
单项选择题White smoke exhausting from a diesel engine can be caused by （）
A.low combustion temperature B.a leaking fuel nozzle check valve C.late fuel injection D.plugged oil-scraper ring hole
