A.satellite /terrestrial system
B.INMAARSAT/COSPAS-SARSAT
C.SART / EPIRB
D.geostationary/polar-orbiting satellites
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A.enable SAR operations to start with minimum delay
B.give facilities to marine communication
C.reduce sharply the chances of ship’s sinking
D.both A and C
A.occasionally
B.accidentally
C.often
D.usually
A.keep
B.kept
C.are keeping
D.have kept
A.has made
B.make
C.has been made
D.is making
A.When the distress alert is sounded
B.When the emergency equipment is switching on
C.When the general emergency alarm is sounded
D.When the distress broadcast is sounded
最新試題
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
All coast radio stations（）DSC installed for VHF and HF.
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.
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.
The vessel has stayed in port for seven days because she needs（）.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
Ship-to-ship distress alerting should be conducted by（）.
We consider（）send a helicopter with medical facilities to the distress area.
（）will form the basis for distress alerting and safety calling.