In NAVTEX service, VITAL warnings will（）by transmitting station.<br>A:be transmitted at once though the frequency is not clear<br>B:be transmitted as soon as the frequency is cleared coordinately<br>C:be transmitted at its scheduled transmissions<br>D:be transmitted at next scheduled transmissions

In NAVTEX service, VITAL warnings will（）by transmitting station.
A:be transmitted at once though the frequency is not clear
B:be transmitted as soon as the frequency is cleared coordinately
C:be transmitted at its scheduled transmissions
D:be transmitted at next scheduled transmissions

出自：海船船员证

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