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

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

International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.

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.

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.

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

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

The priority of EGC messages is classified by（）.

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

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