Ship-to-ship distress alerting should be conducted by（）.

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.

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

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

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

If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.

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.

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

The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.

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.