A.sometimes
B.all times
C.never
D.partly
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A.automatically suppressed
B.finished by the operator
C.manually suppressed
D.done again
A.DSC
B.EPIRB
C.EGC
D.NBDP
A.Inmarsat SES
B.VHF /DSC or MF/DSC
C.SART and VHF/DSC
D.Satellite EPIRB and VHF /DSC
A.ship in distress and assisting units
B.NCS and RCC
C.RCCs and “on-scene commander” or “coordinator surface search”
D.ship in distress and coast station
A.GMDSS
B.EGC
C.MSI
D.DSC
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SOLAS ships shall be equipped with（）.
All coast radio stations（）DSC installed for VHF and HF.
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.
On-scene communications will normally take place between（）.
（）will form the basis for distress alerting and safety calling.
（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
We consider（）send a helicopter with medical facilities to the distress area.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.