A.double frequencies
B.single frequency
C.dedicated frequency
D.multiple frequencies
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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
A.local-mode coverage
B.SAR operations
C.data process
D.continuous broadcast
A.Inmarsat-A
B.Inmarsat-C
C.Inmarsat-B
D.Inmarsat-M
最新試題
Ship-to-ship distress alerting should be conducted by（）.
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.
Radio beacon can be activated（）in case of distress.
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.
Every lifeboat which is fitted with a fixed two-way（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
We consider（）send a helicopter with medical facilities to the distress area.
Radio communication（）for many years and helps to save tens of thousands of lives.
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.
The advantage of geostationary satellites is（）.