The advantage of geostationary satellites is（）.

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

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

（）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 ship constructed on or after（）shall comply with all the applicable requirements of this chapter.

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

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

SOLAS ships shall be equipped with（）.

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

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