单项选择题
A.A NAVTEX receiver B.An EGC receiver C.MF/HF radio telephone D.HF radio telephone with NBDP
Ships sailing in（）are able to receive and print out EGC...
单项选择题Ships sailing in（）are able to receive and print out EGC messages.
A.a fixed area or Navarea in any ocean region B.a Navarea or weather forecast area C.the designated area or given geographic position D.anywhere of the world
Maritime Safety Information（）International SafetyNet Se...
单项选择题Maritime Safety Information（）International SafetyNet Service and NAVTEX Service.
A.consists of B.can be received C.is transmitted by D.Are made on
