单选题The maritime radio system consisting of a series of coast stations transmitting coastal warnings is called（）.ANAVTEXBHYDROLANT/HYDROPACCNAVAREADSAFESEA
单选题
The maritime radio system consisting of a series of coast stations transmitting coastal warnings is called（）.
A
NAVTEX
B
HYDROLANT/HYDROPAC
C
NAVAREA
D
SAFESEA
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