单选题（）will form the basis for distress alerting and safety calling.AGMDSSBEGCCMSIDDSC
单选题
（）will form the basis for distress alerting and safety calling.
A
GMDSS
B
EGC
C
MSI
D
DSC
参考解析
解析：
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相关考题：
The instruction describes completely the ____ and its safety basis. A faculty ;B facilitate ;C facility
海岸电台的MF/HF/VHF的电话业务可在那一卷_____无线电信号书中查找。A.MARITIME RADIO STATIONB.GLOBAL MARITIME DISTRESS AND SAFETY SYSYTEMC.MATITIEM SAFETY INFORMATION SERVICESD.LIST OF RADIO SIGNALS
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Which frequencies and modes are allocated for distress alerting in GMDSS ________．A.406 MHz via EPIRBB.1626.5-1645.5 via INMARSATC.Channel 70 DSC plus six（6）MF/HF DSC frequenciesD.All of the above
海岸电台的MF/HF/VHF的电话业务可在那一卷（）无线电信号书中查找。A、MARITIME RADIO STATIONB、GLOBAL MARITIME DISTRESS AND SAFETY SYSYTEMC、MATITIEM SAFETY INFORMATION SERVICESD、LIST OF RADIO SIGNALS
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单选题Pan-Pan is to be used to announce（）.Aa distress messageBan urgency messageCa safety messageDa message of SMCP
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