Where a propeller shaft passes through the
题型:单项选择题
问题:
Where a propeller shaft passes through the hull,water is prevented from entering by means of a().
A.stuffing box
B.propeller boss
C.seacock
D.stop-water
Where a propeller shaft passes through the hull,water is prevented from entering by means of a().
A.stuffing box
B.propeller boss
C.seacock
D.stop-water