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In case a ship is in emergency or distress in any of 4 areas, it
2023-12-01401到530张大雅
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous ______ alert .
A.MF/HF
B.SART
C.EPIRB
D.any of A. B, C
正确答案是C
