单项选择题

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

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

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单项选择题

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

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

单项选择题

Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）

A.No, it receives the MSI from ship stations
B.Yes, it can
C.only with NBDP terminal, can it receives the MSI sent from coast stations
D.No, it can not receive the MSI sent from coast stations

单项选择题

The priority of EGC messages is classified by（）.

A.distress, urgent and safety
B.safety and routine
C.urgent, safety and routine
D.distress, urgent, safety and routine