When the GMDSS Radio Operator on watch hears“SECURITE”spoken three times he can expect to receive a message concerning（）.<br>A:The safety of navigation or important meteorological warnings<br>B:The safety of a vessel or a person is in jeopardy<br>C:A vessel in need of immediate assistance<br>D:A coast station traffic list

When the GMDSS Radio Operator on watch hears“SECURITE”spoken three times he can expect to receive a message concerning（）.
A:The safety of navigation or important meteorological warnings
B:The safety of a vessel or a person is in jeopardy
C:A vessel in need of immediate assistance
D:A coast station traffic list

出自：海船船员证

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