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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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.
The advantage of geostationary satellites is（）.
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.
SOLAS ships shall be equipped with（）.
COSPAS-SARSAT is intended to be used for（）.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
The vessel has stayed in port for seven days because she needs（）.
Ship-to-ship distress alerting should be conducted by（）.
（）will form the basis for distress alerting and safety calling.