A.consists of
B.can be received
C.is transmitted by
D.Are made on
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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
A.local-mode coverage
B.SAR operations
C.data process
D.continuous broadcast
最新試題
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
The rescue coordination center may（）on stations which interfere with traffic.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
Radio beacon can be activated（）in case of distress.
The vessel has stayed in port for seven days because she needs（）.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
（）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.
Radio communication（）for many years and helps to save tens of thousands of lives.