A.Mobile Satellite Information
B.Motor ship Identification
C.Most Serious Information
D.Maritime Safety Information
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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
A.keep silence
B.interfere with such communication
C.establish communication as directed and render such assistance as is required and appropriate
D.refuse communication as directed and render such assistance as it required and appropriate
最新試題
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
COSPAS-SARSAT is intended to be used for（）.
（）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.
The vessel has stayed in port for seven days because she needs（）.
Radio beacon can be activated（）in case of distress.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
Radio communication（）for many years and helps to save tens of thousands of lives.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
What following is not among the function of SOLAS ships?（）