The position of the AOR-W satellite in the INMARSAT sys……

单项选择题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

单项选择题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

单项选择题International Navtex service is（）.

A.a terrestrial MF system
B.a satellite communication system
C.a land HF radio system
D.a coastal VHF system

单项选择题What language does International NAVTEX use?（）

A.Russian
B.French
C.English
D.German

单项选择题When the power of SART is on, it will（）.

A.transmit distress signal
B.send response signal
C.transmit the signal of ship‟s position
D.be start by X-band radar