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

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

Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.

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.

（）will form the basis for distress alerting and safety calling.

The advantage of geostationary satellites is（）.

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.

SOLAS ships shall be equipped with（）.

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

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