A.square
B.triangle
C.circle
D.rectangle
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A.cannot
B.are not allowed
C.have the right
D.should get permission to
A.every two years
B.every three years
C.every year
D.every four years
A.the radio regulations
B.the technical terms and definitions
C.how to operate the GMDSS SES equipment
D.Maritime Communications
A.alphabetical
B.figure
C.name of stations
D.series
A.radio direction-finding apparatus
B.DSC
C.NAVTEX
D.EPIRB
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SOLAS ships shall be equipped with（）.
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 frequency（）the safety message will be transmitted shall be included in DSC safety call.
The advantage of geostationary satellites is（）.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
Please use（）for（）.