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單項(xiàng)選擇題

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

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單項(xiàng)選擇題

For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.

A.RCC
B.MCC
C.LUT
D.MRCC

單項(xiàng)選擇題

COSPAS-SARSAT is intended to be used for（）.

A.distress alerting
B.locating 406mhz EPIRBs
C.storing distress signal
D.A and B

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