单项选择题
When a ship is in port, （）must keep a gangway watch.
A.officers
B.crew members
C.sailors
D.motorman
点击查看答案&解析
相关考题
-
单项选择题
When a ship is in port, the sailor on duty （）a gangway watch.
A.has
B.keeps
C.looks
D.takes -
单项选择题
Hang national flag upside down should be strictly （）.
A.prohibit
B.prohibited
C.prohibiting
D.prohibits -
单项选择题
When you hoist national flag, you should hoist it（）.
A.quickly
B.rapidly
C.slowly
D.speedily
