37、在能见度不良时,对备有可使用雷达的船舶,当听到他船的雾号显似在本船的正横以前,下列哪些措施是可取的? ( )
①用雷达确定是否存在碰撞危险;②立即倒车把船停住;③将航速减到能维持其航向的最小速度;④立即采取大幅度右转;⑤使用ARPA显示来船的DCPA TCPA。

21、 Which one is not a distress , urgency or safety communication procedure might marked by? ( ))

20、“海上搜救协调中心”用下面哪个缩写表示?( )

19、英文遇险、紧急、安全信文开始分别用什么单词? ( )

16、请选择一个合适的信文标识:( ):I require one pilot and two tugs. ( )

15、请选择一个合适的信文标识:( ):My present maximum draft is 8 meters.

14、请选择一个合适的信文标识:( ) : What is your present maximum draft?

13、 How do you read me? ( )

12、 When visibility is restricted ( ) we can say it is restricted visibility

7、 When it is accepted to remain on a VHF channel, say: ( ).

6、 Area which cannot be scanned by the radar of the vessel because they are shielded by parts of its superstructure, masts, etc means . ( )