A.an EGC receiver only
B.a satellite communication system
C.a HF radio system
D.a VHF with DSC system
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A.English/all distress communications
B.Chinese/some distress calls
C.the language decided by Administration/all distress calls
D.Japanese/some distress alerts
A.countries
B.states
C.names
D.groups
A.200
B.300
C.400
D.800
A.a dummy antenna
B.a supporting facilities
C.a back-up equipment
D.an antenna
A.HF
B.VHF
C.MF
D.MF/HF
最新試題
The rescue coordination center may（）on stations which interfere with traffic.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
Radio communication（）for many years and helps to save tens of thousands of lives.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
SOLAS ships shall be equipped with（）.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
All coast radio stations（）DSC installed for VHF and HF.
The vessel has stayed in port for seven days because she needs（）.
Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.