单项选择题
When do sailors make the ship fast? ()
A. When a ship is unmooring.
B. After a ship is in position alongside a wharf.
C. Before a ship is loading.
D. A and C
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单项选择题
A. When a ship is unmooring.
B. After a ship is in position alongside a wharf.
C. Before a ship is loading.
D. A and C
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