A.the only preamble
B.a part of the preamble
C.the closing
D.the suspension
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A.have received
B.have been received
C.are received
D.are being received
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
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Distress traffic is the communication（）between the station in distress and the ships, aircraft, coast radio stations, coast earth stations and rescue centers participating in the rescue work.
COSPAS-SARSAT is intended to be used for（）.
Ship-to-ship distress alerting should be conducted by（）.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
（）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（）.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
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.
（）will form the basis for distress alerting and safety calling.
What following is not among the function of SOLAS ships?（）