问题
单项选择题
If the buoyant force on a ship’s hull is equal to the displacement tonnage，the ship will（）.
A.require ballast
B.be down by the head
C.sink
D.float
答案
参考答案：D
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If the buoyant force on a ship’s hull is equal to the displacement tonnage，the ship will（）.
A.require ballast
B.be down by the head
C.sink
D.float
参考答案：D