单项选择题
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
If the DSC controller is configured for MF/HF operation...
单项选择题If the DSC controller is configured for MF/HF operation, the distress will be sent on（）.
A.double frequencies B.single frequency C.dedicated frequency D.multiple frequencies
Ship-to-ship distress alerting should be conducted by（）...
单项选择题Ship-to-ship distress alerting should be conducted by（）.
A.Inmarsat SES B.VHF/DSC or MF/DSC C.SART and VHF/DSC D.Satellite EPIRB and VHF/DSC
