A.essential
B.compulsory
C.optional
D.inadvisable
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A.Satellite network
B.Satellite link
C.GMDSS
D.Satellite system
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
最新試題
The priority of EGC messages is classified by（）.
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.
The rescue coordination center may（）on stations which interfere with traffic.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
SOLAS ships shall be equipped with（）.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
All coast radio stations（）DSC installed for VHF and HF.