单项选择题
The position if the IOR satellite in the INMARSAT system is（）above the equator.
A.64.5E
B.178E
C.15.5W
D.54W
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相关考题
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单项选择题
There are some back-up satellites in the event of failure. If the operational satellite is out of work,（）.
A.communications in the whole system will stop
B.the global system will be damaged
C.the back-up one will take its place
D.the whole system will not work -
单项选择题
The satellites over the major ocean regions cover the globe（）.
A.besides the polar regions
B.including the North Pole and the South Pole
C.above 70N and below 70S
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（）is a space system using one or more artificial earth satellites.
A.satellite network
B.Satellite Link
C.INMARSAT
D.Satellite System
