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【单选题】

独立模型法区域网空中三角测量是把(_____)视为刚体,利用各单元模型彼此间的公共点连成一个区域。

A.
一条航带模型
B.
多条航带模型
C.
一个单元模型
D.
多个单元模型
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参考解析:
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【单选题】It is now almost two years since the European Union decided to go ahead with plans to launch a satellite-navigation network to rival America’s existing Global Positioning System (GPS). For much of thi...

A.
Using of various signals for communication.
B.
Writing message or information in secret code.
C.
Automatic ally operated positioning system.
D.
Accuracy checking device.