In the GMDSS, MSI broadcasts will be made on two dedicated systems:（）and（）.<br>A:NBDP/VHF radio<br>B:Inmarsat safetyNet/NAVTEX<br>C:Safety service / Inmarsat-A<br>D:Long range / short range

In the GMDSS, MSI broadcasts will be made on two dedicated systems:（）and（）.
A:NBDP/VHF radio
B:Inmarsat safetyNet/NAVTEX
C:Safety service / Inmarsat-A
D:Long range / short range

出自：海船船员证

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