You should （）the mooring lines according to the changes of draft.

单项选择题Pay more attention to the rising and falling of （）.

A.tide
B.water
C.sea
D.wave

单项选择题Please tell the duty AB to lower the （）.

A.winch
B.radar
C.gangway
D.pilot ladder

单项选择题When a ship is in port, （）must keep a gangway watch.

A.officers
B.crew members
C.sailors
D.bosun

单项选择题A （）should be placed on the gangway.

A.life-buoy
B.life-raft
C.life-boat
D.life craft

单项选择题Please fill in this visitor’s （）.

A. registry book
B. exercise book
C. seaman’s book
D. record book