A.In the Captain's office
B.In the sea cabin
C.At the GMDSS operating position
D.Anywhere on board the vessel
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A.The safety of navigation or important meteorological warnings
B.The safety of a vessel or a person is in jeopardy
C.A vessel in need of immediate assistance
D.A coast station traffic list
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
A.VHF
B.SART
C.NAVTEX
D.LES
A.VHF
B.SART
C.NAVTEX
D.LES
A.forward error correction
B.aftward error correction
C.DGPS
D.error-free and low error reception
最新試題
Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
Before GMDSS, if the radio officer on board is serious ill,（）.
（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
Please use（）for（）.
On-scene communications will normally take place between（）.
Ship-to-ship distress alerting should be conducted by（）.
Radio beacon can be activated（）in case of distress.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
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.