A.call sign
B.port of register
C.radio name
D.signal label
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A.EPIRB
B.SART
C.Mobile Station
D.Distress Alerting
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
最新試題
Ship-to-ship distress alerting should be conducted by（）.
Please use（）for（）.
Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
We consider（）send a helicopter with medical facilities to the distress area.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
The rescue coordination center may（）on stations which interfere with traffic.
Radio beacon can be activated（）in case of distress.
The priority of EGC messages is classified by（）.