A.Satellite network
B.Satellite link
C.GMDSS
D.Satellite system
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A.easy/reliable
B.difficult/cheap
C.stable/compulsory
D.easy/expensive
A.MCC/LUT/RCC
B.LUT/MCC/RCC
C.LUT/RCC/MCC
D.LUT/RCC/LUT
A.at sea
B.on land
C.in the air
D.throughout the world
A.COSPAS-SARSAT
B.ground receiving stations
C.spacecraft
D.satellite SAR instrument
A.anywhere in the world
B.at sea
C.in the air
D.ashore
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The rescue coordination center may（）on stations which interfere with traffic.
（）will form the basis for distress alerting and safety calling.
All coast radio stations（）DSC installed for VHF and HF.
The advantage of geostationary satellites is（）.
Ship-to-ship distress alerting should be conducted by（）.
SOLAS ships shall be equipped with（）.
Every lifeboat which is fitted with a fixed two-way（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
Distress traffic is the communication（）between the station in distress and the ships, aircraft, coast radio stations, coast earth stations and rescue centers participating in the rescue work.
Please use（）for（）.
Radio communication（）for many years and helps to save tens of thousands of lives.