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
单项选择题 If a DSC distress relay is transmitted from coast station , it will（）.
单项选择题 EGC is a（）part of INMARSAT-C.
单项选择题 Distress signal are always stored in the memory so as to start（）.
