A.The message can be directed to the desired location
B.The message can follow the earth‟s curvature
C.The quality of message can not be affected by climatic
D.the range of the message extend and the quality of reception is improved
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A.are capable of following / distance
B.can follow / altitude
C.can hardly follow / shape
D.are unable following / angle
A.quick and good
B.convenient and certain
C.easily and simply
D.important and difficult
A.living standards
B.survival condition
C.chance of survival
D.technical specification
A.they all have different limitations with respect to coverage
B.they all have different limitations in the technology they use
C.different systems apply to different ships
D.all of above
A.Inmarsat-A
B.Inmarsat-B
C.Inmarsat-C
D.Inmarsat-F
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Radio communication（）for many years and helps to save tens of thousands of lives.
What following is not among the function of SOLAS ships?（）
SOLAS ships shall be equipped with（）.
The priority of EGC messages is classified by（）.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
The vessel has stayed in port for seven days because she needs（）.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.