The radiotelephone message that indicates a station is about to transmit a message concerning the safety of navigation or important meteorological warnings commences with（）.<br>A:TTT<br>B:The spoken word PAN<br>C:The spoken word SECURITE<br>D:XXX

The radiotelephone message that indicates a station is about to transmit a message concerning the safety of navigation or important meteorological warnings commences with（）.
A:TTT
B:The spoken word PAN
C:The spoken word SECURITE
D:XXX

出自：海船船员证

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