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

Before GMDSS, if the radio officer on board is serious ill,（）.

（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.

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

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

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.

Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.

Please use（）for（）.

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.

Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.