By using（）system a ship can send a distress message and know with certainty it will be received.<br>A:COSPAS-SARSAT<br>B:SATELLITE<br>C:terrestrial radio<br>D:INMARSAT

By using（）system a ship can send a distress message and know with certainty it will be received.
A:COSPAS-SARSAT
B:SATELLITE
C:terrestrial radio
D:INMARSAT

出自：海船船员证

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