A.Navarea warnings
B.coastal warnings
C.local warnings
D.Meteorological warnings
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A.Mobile Satellite Information
B.Motor ship Identification
C.Most Serious Information
D.Maritime Safety Information
A.receiving messages/one station
B.transmission/ one coast station or ship
C.communicating /one ship
D.contacting/other
A.120/20
B.56/18
C.100/16
D.96/8
A.VHF channel16 and 13
B.appropriate DSC distress and safety frequency
C.INMARSAT TDM message channel
D.VHF channel 70 and channel 8
A.urgent traffic
B.distress alert
C.routine traffic
D.NAVTEX message
最新試題
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.
On-scene communications will normally take place between（）.
SOLAS ships shall be equipped with（）.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
Ship-to-ship distress alerting should be conducted by（）.
The vessel has stayed in port for seven days because she needs（）.
We consider（）send a helicopter with medical facilities to the distress area.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.