A.only automatically
B.only manually
C.both automatically and manually
D.only by remote control
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A.be damaged
B.work normally regardless of harmful conditions
C.not wok though it is not in a bad condition
A.COSPAS-SARSAT
B.SATELLITE
C.terrestrial radio
D.INMARSAT
A.RCC
B.MCC
C.LUT
D.MRCC
A.distress alerting
B.locating 406mhz EPIRBs
C.storing distress signal
D.A and B
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
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By using（）system a ship can send a distress message and know with certainty it will be received.
Radio beacon can be activated（）in case of distress.
Before GMDSS, if the radio officer on board is serious ill,（）.
Please use（）for（）.
SOLAS ships shall be equipped with（）.
The advantage of geostationary satellites is（）.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
All coast radio stations（）DSC installed for VHF and HF.