单项选择题
Each life preserver must be readily accessible to the person for whom it is intended while he or she is（）.
A.at work B.in his or her berthing area C.BOTH at work and in his or her berthing area D.None of the above are correct
单项选择题 Each life jacket light that has a non-replaceable power source must be replaced（）.
单项选择题 A person reports to you with a fishhook in his thumb. To remove it you should（）.
单项选择题 （）is used for lifting cargo.
