National flag should not be（卷叠）（）.

单项选择题We shall prepare for(港口国)（）inspection.

A.PSC
B.ARPA
C.GPS
D.ECDIS

单项选择题（）（降）the flag.

A.Hoist
B.Top
C.Lower
D.Bring

单项选择题You should keep national flag（飘扬）（）.

A.flew
B.flown
C.flying
D.flies

单项选择题（）（调整）ropes when necessary.

A.Try
B.Adjust
C.Notice
D.Operate

单项选择题I shall keep the﹙保安巡逻)（） .

A. coast patrol
B. inshore patrol
C. patrol service
D. security patrol