问题
单项选择题
As defined in the Rules，the term vessel includes（）.
A.seaplanes
B.non-displacement craft
C.barges
D.All of the above
答案
参考答案：D
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As defined in the Rules，the term vessel includes（）.
A.seaplanes
B.non-displacement craft
C.barges
D.All of the above
参考答案：D