单项选择题
The（）is that search and rescue authorities ashore, as well as shipping in the immediate vicinity of the ship in distress, will be rapidly alerted to a distress incident so they can assist in a coordinated SAR operation with the minimun delay.
A.common communication system
B.distress traffic system
C.basic concept of GMDSS
D.SAR operation procedure
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单项选择题
（）communication are intership VHF radio telephone communication.
A.ship-to-shore
B.shore-to –ship
C.bridge-to-bridge -
单项选择题
From IMO’S point of view, INMARSAT’s most important function is the provision of（）.
A.general radio communication
B.MSI
C.improved distress and safety communication
D.bridge-to-bridge communication -
单项选择题
（）is the united nations agency responsible for the Radio Regulations among other things.
A.ITU
B.IMO
C.MSC
D.WMO
