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
您可能感興趣的試卷
你可能感興趣的試題
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
A.Ship stations
B.Coast stations
C.NCSs
D.NCC
A.NBDP
B.EGC receiver
C.NBDP or both
D.EGC receiver or both
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.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
COSPAS-SARSAT is intended to be used for（）.
Ship-to-ship distress alerting should be conducted by（）.
Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
Before GMDSS, if the radio officer on board is serious ill,（）.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
Radio beacon can be activated（）in case of distress.