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
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A.INMARSAT
B.IMO
C.MSC
D.CES
A.3
B.2
C.1
D.4
A.IMO Headquarters in London
B.Inmarsat Headquarters building in London
C.Western European Maritime Organization
D.International Maritime Safety Committee
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
A.55.5W
B.64.5E
C.15.5W
D.178E
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The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
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.
Before GMDSS, if the radio officer on board is serious ill,（）.
SOLAS ships shall be equipped with（）.
The rescue coordination center may（）on stations which interfere with traffic.
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.
Ship-to-ship distress alerting should be conducted by（）.
Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.