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
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A.consists of
B.can be received
C.is transmitted by
D.Are made on
A.double frequencies
B.single frequency
C.dedicated frequency
D.multiple frequencies
A.Inmarsat SES
B.VHF/DSC or MF/DSC
C.SART and VHF/DSC
D.Satellite EPIRB and VHF/DSC
A.indicate the ship in distress that the alert has been received
B.alert ships in the area of a distress incident that a distress has occurred
C.inform other coast station of distress incident
D.repeat the distress alert in 5 minutes
A.component
B.supportable
C.combined
D.complimentary
最新試題
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
The vessel has stayed in port for seven days because she needs（）.
International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
Radio beacon can be activated（）in case of distress.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
On-scene communications will normally take place between（）.
Before GMDSS, if the radio officer on board is serious ill,（）.
Please use（）for（）.