A.automatically suppressed
B.finished by the operator
C.manually suppressed
D.done again
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A.Ship stations
B.Coast stations
C.NCSs
D.NCC
A.NBDP
B.EGC receiver
C.NBDP or both
D.EGC receiver or both
A.the ship has received the DSC distress call on a HF frequency
B.the coast station concerned has not acknowledged it within 5 minutes
C.the ship will take command of search and rescue in 5 minutes
D.A and B
A.INMARSAT
B.IMO
C.MSC
D.CES
A.3
B.2
C.1
D.4
最新試題
By using（）system a ship can send a distress message and know with certainty it will be received.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
COSPAS-SARSAT is intended to be used for（）.
Ship-to-ship distress alerting should be conducted 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.
We consider（）send a helicopter with medical facilities to the distress area.
The priority of EGC messages is classified by（）.
Radio communication（）for many years and helps to save tens of thousands of lives.
（）will form the basis for distress alerting and safety calling.
All coast radio stations（）DSC installed for VHF and HF.