单项选择题
The steering oar in a lifeboat is（）.
A.shorter than the others B.used for the stroke oar C.used by the forward man in the boat to direct the bow D.longer than the others and should be lashed to the stern
单项选择题 The maximum number of passengers a T-Boat may carry（）.
单项选择题 The light on a life jacket must be replaced（）.
单项选择题 The lifesaving equipment on all vessels shall be（）.
