A.satellite and terrestrial communication systems
B.only navigational and alerting systems
C.just MSI system and locating system
D.SAR co-ordination system
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A.NAVTEX
B.EGC
C.HF-telex
D.all of above
A.can be overcome by using traditional techniques
B.cannot be overcome by satellite system
C.can be overcome by satellite and digital techniques
D.cannot be tackled by any modern system
A.business opportunity
B.good-quality radio telephone conversations
C.telex service
D.both B and C
A.a fixed area or Navarea in any ocean region
B.a Navarea or weather forecast area
C.the designated area or given geographic position
D.anywhere of the world
A.automatically suppressed
B.finished by the operator
C.manually suppressed
D.done again
最新試題
What following is not among the function of SOLAS ships?（）
Radio communication（）for many years and helps to save tens of thousands of lives.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
Radio beacon can be activated（）in case of distress.
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.
On-scene communications will normally take place between（）.
The priority of EGC messages is classified by（）.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
（）will form the basis for distress alerting and safety calling.
（）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.