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

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.

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

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

At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.

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

（）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.

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.

In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.

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