单项选择题
A.search and rescue B.safe C.co-ordinated D.hydrographic
The broadcast of MSI is made on two dedicated systems. ...
单项选择题The broadcast of MSI is made on two dedicated systems. “dedicated” means（）.
A.special B.different C.expensive D.valuable
A SART can be fixed on（）.A.a mother shipB.a lifeboatC.a...
单项选择题A SART can be fixed on（）.
A.a mother ship B.a lifeboat C.a life craft D.all of A,B,C
All stations which receive a distress alert shall immed...
单项选择题All stations which receive a distress alert shall immediately cease（）.
A.any transmission B.any harmful transmission C.to use radiotelephone D.using radiotelephone
