你可能感興趣的試題

Which of the following methods is used to prevent throttling of compressed air through the diesel engine air starting valves?（）

A.Holding the valve open for a long period
B.Increasing the starting air pressure used
C.Opening the stating air valve quickly
D.Reducing the starting air valve size

單項(xiàng)選擇題

Small crack in the crankshaft bearing surface of a diesel engine are an indication of（）

A.corrosion fretting
B.insufficient lubrication
C.abnormal wear
D.fatigue failure