Please tell the duty AB to lower the （）.

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

单项选择题-Will you take me to see your chief officer? -Sorry, he has gone （）. Would you like to leave a message for him?

A.shore
B.land
C.ashore
D.port

单项选择题--Good morning, sirs. What can I do for you? --We are the （）. We would like to see your captain.

A. PSC inspectors
B. chief officer
C. second officer
D. third officer