单选题 1分

Ships in areas A3 and A4 will transmit_______ as appropriate.①a ship-to-ship alert on MF/VHF; ②ship-...

Ships in areas A3 and A4 will transmit_______ as appropriate.①a ship-to-ship alert on MF/VHF; ②ship-to-shore alert by SES/HF DSC;③a ship-to-shore alert by satellite EPIRB
  • A.①②
  • B.②③
  • C.①③
  • D.①②③

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