问题
单项选择题
On a passenger vessel，the vessel’s name must appear on（）.
A.ring life buoy
B.lifeboats
C.lifeboat oars
D.All of the above
答案
参考答案：D
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On a passenger vessel，the vessel’s name must appear on（）.
A.ring life buoy
B.lifeboats
C.lifeboat oars
D.All of the above
参考答案：D