Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）

We consider（）send a helicopter with medical facilities to the distress area.

The priority of EGC messages is classified by（）.

By using（）system a ship can send a distress message and know with certainty it will be received.

Radio beacon can be activated（）in case of distress.

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.

Ship-to-ship distress alerting should be conducted by（）.

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.

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

Radio communication（）for many years and helps to save tens of thousands of lives.