Lb2A4152.带缓和曲线的圆曲线外矢距的计算公式为E=(R+p)sec(α/2)-R,若R=300m,Ɩ₀=30m,α=20°10′20″,p=0.1250m,则E为( )。
A.5.816m B.4.836m C.4.840m D.4.860m正确答案B
Lb2A4152.带缓和曲线的圆曲线外矢距的计算公式为E=(R+p)sec(α/2)-R,若R=300m,Ɩ₀=30m,α=20°10′20″,p=0.1250m,则E为( )。
A.5.816m B.4.836m C.4.840m D.4.860m正确答案B