A.EPIRB
B.SART
C.Mobile Station
D.Distress Alerting
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A.COSPAS-SARSAT
B.ground receiving stations
C.storing distress signal
D.Near polar orbiting satellites
A.20 to 30
B.200
C.100
D.450
A.have received
B.have been received
C.are received
D.are being received
A.EPIRB
B.PLB
C.ELT
D.MCC
A.Local User Terminal
B.Spacecraft
C.Local-mode coverage
D.Near polar orbiting satellites
最新試題
The priority of EGC messages is classified by（）.
SOLAS ships shall be equipped with（）.
By using（）system a ship can send a distress message and know with certainty it will be received.
The rescue coordination center may（）on stations which interfere with traffic.
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.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
Radio beacon can be activated（）in case of distress.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.