单项选择题
--Where is the（）(水手长)?
--He’s in his room.
A.captain
B.bosun
C.pilot
D.agent
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Check （）(危险区) and report , please.
A. danger area
B. safety area
C. danger room
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They should take care of the （系泊缆绳）（）.
A. head lines
B. mooring lines
C. breast lines
D. stern lines -
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Pay attention to the （）（安全）of the gangway.
A.danger
B.safe
C.safely
D.safety
