The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.

Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.

The priority of EGC messages is classified by（）.

Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.

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.

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.

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.

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.