Our ship will arrive（）Port of Hongkong on Sunday.

单项选择题We shall send a（）to the bow. Because the fog is too thick.

A.watchman
B.look-out
C.look out
D.looker

单项选择题The pilot will（）your ship at 2015 hours tonight.

A.aboard
B.board
C.go ahead
D.go forward

单项选择题（）scale charts are used for harbors.

A.Small
B.Large
C.Loran
D.Route

单项选择题（）is the maximum speed of your ship?

A.How
B.Which
C.How about
D.What

单项选择题The fog is too thick. Don’t（）the radar.

A.switch on
B.switch off
C.close
D.open