Land-based authority conducting and co-ordinating search and rescue operations in a designated area defines（）.<br>A:RCC<br>B:OSC<br>C:CSS<br>D:GPS

Land-based authority conducting and co-ordinating search and rescue operations in a designated area defines（）.
A:RCC
B:OSC
C:CSS
D:GPS

出自：海船船员证

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