單項(xiàng)選擇題An SES operator can chose the most suitable CESs according to（）.

A.the routing agreement for a particular ocean region
B.The communication service he required
C.the positions of his ship and the CESs
D.B and C


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題The NCS of INMARSAT-A system in the AOR-E is in（）.

A.Goonhilly, UK
B.Yamaguchi, Japan
C.Perth, Australia
D.Southbury, USA

2.單項(xiàng)選擇題Each NCS woks as a type of（）, assisting controlling and monitoring telex and telephone network as quickly as possible.

A.switch operator
B.communication gateway
C.national operator
D.on-scene commande

4.單項(xiàng)選擇題Geostationary satellite are artificial satellite which（）.

A.always move slowly
B.are in one place only
C.sometimes move and sometime don‟t
D.synchronize with the movement of the earth

5.單項(xiàng)選擇題A radio link between a transmitting earth station and a receiving earth station through one satellite is named a（）.

A.Radio link
B.Space segment
C.Satellite link
D.upper link