Distress signal are always stored in the memory so as to start（）.<br>A:local-mode coverage<br>B:SAR operations<br>C:data process<br>D:continuous broadcast

Distress signal are always stored in the memory so as to start（）.
A:local-mode coverage
B:SAR operations
C:data process
D:continuous broadcast

出自：海船船员证

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