Which system may be useful for messages，such as local storm warnings or a shore-to-ship distress alert，for which it is inappropriate to alert all ships in the satellite coverage area?（）<br>A:NAVTEX<br>B:EGC<br>C:AMVER<br>D:DSC

Which system may be useful for messages，such as local storm warnings or a shore-to-ship distress alert，for which it is inappropriate to alert all ships in the satellite coverage area?（）
A:NAVTEX
B:EGC
C:AMVER
D:DSC

出自：海船船员证

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