单项选择题
The life jackets on all vessels shall be（）.
A.inspected weekly B.worn at all times C.readily available D.tested yearly
单项选择题 The last shot of an anchor cable is usually painted（）.
单项选择题 Safety shackles are fitted with（）.
单项选择题 Required lifesaving equipment on existing vessels may becontinued in use on the vessel if（）.
