In NAVTEX service, VITAL warnings will

In NAVTEX service, VITAL warnings will（）by transmitting station.

Abe transmitted at once though the frequency is not clear
Bbe transmitted as soon as the frequency is cleared coordinately
Cbe transmitted at its scheduled transmissions
Dbe transmitted at next scheduled transmissio

参考答案

参考解析：

分类：GMDSS题库

《海岸电台播发奈伏泰斯（NAVTEX）办法》中规定的VITAL、IMPORTANT、ROUTINE系指。

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