单项选择题
What publications should a GMDSS Operator consult regarding the proper set-up and operation of vessel equipment（）.
A.ITU Publications
B.The manufacturers instruction manuals
C.Part 90 of the FCC Rules and Regulations
D.Code of Federal Regulations，Title 47，Part 80，Subpart W
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相关考题
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单项选择题
The data travels from the（）to the INMARSAT Network Coordination Station（NCS）and then down to the SES’s on ships at sea.
A.VHF
B.SART
C.NAVTEX
D.LES -
单项选择题
The（）provides the link between the Space Segment and the land-based National/International fixed communications networks.
A.VHF
B.SART
C.NAVTEX
D.LES -
单项选择题
Reliable delivery of messages is ensured by（）techniques.
A.forward error correction
B.aftward error correction
C.DGPS
D.error-free and low error reception
