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.

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

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

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

The frequency（）the safety message will be transmitted shall be included in DSC safety call.

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

COSPAS-SARSAT is intended to be used for（）.

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

On-scene communications will normally take place between（）.

The priority of EGC messages is classified by（）.