A.a terrestrial MF system
B.a satellite communication system
C.a land HF radio system
D.a coastal VHF system
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A.Russian
B.French
C.English
D.German
A.transmit distress signal
B.send response signal
C.transmit the signal of ship‟s position
D.be start by X-band radar
A.consists of
B.is consisted of
C.consisted of
D.are consisted of
A.urgent traffic
B.distress alert
C.routine traffic
D.NAVTEX message
A.satellite and terrestrial communication systems
B.only navigational and alerting systems
C.just MSI system and locating system
D.SAR co-ordination system
最新試題
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
The advantage of geostationary satellites is（）.
We consider（）send a helicopter with medical facilities to the distress area.
By using（）system a ship can send a distress message and know with certainty it will be received.
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.
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.
All coast radio stations（）DSC installed for VHF and HF.
SOLAS ships shall be equipped with（）.
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（）.