A.have received
B.have been received
C.are received
D.are being received
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A.400
B.240
C.450
D.180
A.on the bridge
B.in the coast station
C.on the forecastle
D.on starboard side
A.Navarea warnings
B.coastal warnings
C.local warnings
D.Meteorological warnings
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
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SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
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.
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.
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 frequency（）the safety message will be transmitted shall be included in DSC safety call.
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.
Radio beacon can be activated（）in case of distress.
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.
What following is not among the function of SOLAS ships?（）