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.

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

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

The advantage of geostationary satellites is（）.

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

What following is not among the function of SOLAS ships?（）

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

The rescue coordination center may（）on stations which interfere with traffic.

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.

SOLAS ships shall be equipped with（）.