Where a propeller shaft passes through the hull，water is prevented from entering by means of a（）.<br>A:stuffing box<br>B:propeller boss<br>C:seacock<br>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

出自：海船船员证

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