• 2022-06-14
    2.一条直线分两段丈量,它们的中误差分别为和,该直线丈量的中误差为( )
    未知类型:{'options': ['A.[img=80x25]17de906f432095c.png[/img]', 'B.[img=63x25]17de906f5369149.png[/img]', 'C. [img=99x29]17de906f6fe0859.png[/img]', 'D. [img=67x20]17de906f7d4d6a8.png[/img]'], 'type': 102}