A.COSPAS-SARSAT
B.ground receiving stations
C.storing distress signal
D.Near polar orbiting satellites
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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
A.1992
B.1980
C.1984
D.1988
最新試題
By using（）system a ship can send a distress message and know with certainty it will be received.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
The advantage of geostationary satellites is（）.
On-scene communications will normally take place between（）.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
What following is not among the function of SOLAS ships?（）
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
Please use（）for（）.
We consider（）send a helicopter with medical facilities to the distress area.