A.be responsible for
B.have an impact on
C.command
D.give a guidance to
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A.identity
B.identical
C.identify
D.identification
A.cannot
B.are no allowed
C.have the right
D.should get permission to
A.receive shore-to-ship distress alerting
B.transmit ship-to-shore distress alerting
C.receive message for public correspondence
D.transmit and receive locating signals
A.the radio regulations
B.the technical terms and definitions
C.how to operate the GMDSS SES equipment
D.Maritime Communications
A.only SAR authorities on land
B.all ships in a very large sea area
C.the nearest coast stations and port radios
D.the SAR authorities ashore as well as ships in the vicinity of the casualty
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Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
Radio communication（）for many years and helps to save tens of thousands of lives.
The priority of EGC messages is classified by（）.
Please use（）for（）.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
Before GMDSS, if the radio officer on board is serious ill,（）.