[单选题]Todeterminehorizontalpositionsofarbitrarypointsontheearth’ssurfaceandelevationofpointsaboveorbelowareferencesurfaceareknownas.

A
A control network 
B
triangulation   
C
a control survey
D
traversing
正确答案:C
扫描二维码
免费搜题、免费刷题、免费查看解析