A.location and capacity of the facilities located on board ships
B.Position and type of a sincre sintion
C.Capacity and location of shore based communication facilities
D.Position and capacity of mobile communication stations
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A.64.5E
B.178E
C.15.5W
D.54W
A.two
B.three
C.more than two
D.more than three
最新試題
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.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
Radio communication（）for many years and helps to save tens of thousands of lives.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）