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

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

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

The vessel has stayed in port for seven days because she needs（）.

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

The priority of EGC messages is classified by（）.

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.

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

Please use（）for（）.

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