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

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

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,（）.

On-scene communications will normally take place between（）.

COSPAS-SARSAT is intended to be used for（）.

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

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

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