A.10 minutes every 4 hours B.half an hour every other hour C.irregular period of time D.5 minutes every two hours
单项选择题The NAVTEX receiver can be mounted on().
A.on the bridge B.in the coast station C.on the forecastle D.on starboard side
单项选择题The concept of NAVTEX is of a()system for the broadcast and receipt of MSI.
A.search and rescue B.safe C.co-ordinated D.hydrographic
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
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
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