问题
单项选择题
The（）provides the link between the Space Segment and the land-based National/International fixed communications networks.
A.VHF
B.SART
C.NAVTEX
D.LES
答案
参考答案：D
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The（）provides the link between the Space Segment and the land-based National/International fixed communications networks.
A.VHF
B.SART
C.NAVTEX
D.LES
参考答案：D