A.relevant to
B.relate to
C.in response to
D.in relation to
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A.WMO
B.IHO
C.IMO
D.WARC
A.always move slowly
B.are in one place only
C.sometime move sometime don‟t move
D.are synchronizing with the movement of the earth
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.can be overcome by using traditional techniques
B.can not be overcome by satellite system
C.can be overcome by satellite and digital techniques
D.can not be tackled by any modern system
A.assist
B.send a rescue
C.search the distress area
D.Reach the distress position at once
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Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
Please use（）for（）.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
Ship-to-ship distress alerting should be conducted by（）.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
Radio beacon can be activated（）in case of distress.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
All coast radio stations（）DSC installed for VHF and HF.
Radio communication（）for many years and helps to save tens of thousands of lives.