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

The priority of EGC messages is classified by（）.

（）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.

Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.

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.

In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.

SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.

For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.

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.

As each MSI message will have a unique identity, the printing of messages already received correctly is（）.