A.selective and can be suppressed by ships
B.mandatory and can not be suppressed by ships in the affected area
C.not very important so that ships don‟t require them
D.received by all ships wherever they are
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A.all vessels
B.selected groups of ships
C.a particular ship
D.A, B, C are all right
A.a coast station/a ship station
B.an EPIRB/a SART
C.ARQ/FEC
D.a back-up satellite/a land SAR unit
A.ship in distress and assisting units
B.NCS and RCC
C.RCCs and „0n-scene commander‟ or “co-ordinator surface search”
D.ship in distress and coast station
A.SES/DSC/EPIRB
B.SART/radiotelephone
C.COSPAS-SARSAT
D.both B and C
A.general communication
B.distress alerting and safety calling
C.receive MSI
D.both B and C
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SOLAS ships shall be equipped with（）.
All coast radio stations（）DSC installed for VHF and HF.
COSPAS-SARSAT is intended to be used for（）.
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.
Radio communication（）for many years and helps to save tens of thousands of lives.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
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.
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（）.