单项选择题
A.cylindrical in shape with service connections located at the top and bottom
B.opened and made available for inspection during biannual inspections provided
C.with automatic drain traps for the removal of moisture
D.so installed as to make the drain connections effective under extreme conditions of trim
单项选择题 Which of the conditions listed may occur in an operating diesel engine if air pockets form within the cylinder head circulating water passages? （）
单项选择题 The two strokes of a two-stroke/cycle diesel engine are （）
单项选择题 Which of the items listed causes a direct acting mechanical governor to operate the engine fuel control linkage?（）