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
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Each life jacket light that has a non-replaceable power source must be replaced（）.
A.every 6 months after initial installation
B.every 12 months after initial installation
C.every 24 months after initial installation
D.on or before the expiration date of the power source -
单项选择题
A person reports to you with a fishhook in his thumb. To remove it you should（）.
A.pull it out with pliers
B.cut the skin from around the hook
C.push the barb through，cut it off，then remove the hook
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单项选择题
（）is used for lifting cargo.
A.A mooring winch
B.A windlass
C.A deck crane
D.A lifeboat engine
