Having studied the INMARSAT document, GMDSS document, SOLAS Convention and other international navigation documents, we all know that the Chapter IV of SOLAS Convention is mainly about（）.<br>A:the radio regulations<br>B:the technical terms and definitions<br>C:how to operate the GMDSS SES equipment<br>D:Maritime Communications

Having studied the INMARSAT document, GMDSS document, SOLAS Convention and other international navigation documents, we all know that the Chapter IV of SOLAS Convention is mainly about（）.
A:the radio regulations
B:the technical terms and definitions
C:how to operate the GMDSS SES equipment
D:Maritime Communications

出自：海船船员证

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