如图1,A、C投点在线路中线上,导线坐标计算结果如下:A(0,0)、B(238.820,-42.376)、C(1730.018,0)、D(1876.596,0.007),当仅器安在A、C点上时,怎样进洞测设?f9a0089622ef4e80ffc4e671412851e7.png
举一反三
- 当温度T≠0,E=EF时,费米分布函数f(E)= A: 1/2 B: 0 C: 1 D: 1/4
- 切线支距法测设线路中线第二缓和曲线及后半段圆曲线,直缓点坐标为: A: 1,-1 B: 0,0 C: T,0 D: 0,T
- 【单选题】Which of the following matrices does not have the same determinant of matrix B: [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -1, 0, -9,-5] A. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 0; -1, 0, -9, -5] B. [1, 3, 0, 2; -2, -5, 7, 4; 1, 0, 9, 5; -1, 0, -9, -5] C. [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -3, -5, -2, -1] D. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 1; -1, 0, -9, -5]
- 过空间点A(2,-3, 4)向y轴作垂线,垂足坐标为( ) A: (2,0, 4) B: (0,-3, 0) C: (2,0, 0) D: (0,0, 4)
- 利用行列式的性质计算下列行列式的值1 2 0 0 02 5 0 0 0 9 8 1 2 37 6 4 5 65 4 7 8 9