设方阵\( A \)和\( B \) 等价，\( A \) 的所有\( k \) 阶子式全为零，则( ) A: \( r\left( B \right) < k \) B: \( r\left( B \right) = k \) C: \( r\left( B \right) \ge k \) D: \( r\left( B \right) \le k \)

哪个公式的含义是“取A2单元格的右边3个字符”？ A: RIGHT(A2,3) B: RIGHT(A3,2) C: RIGHT(A2:3) D: RIGHT(A3:2)

函数\(y = {\left( { - 2x + 1} \right)^4}\)的导数为（ ）. A: \( - 8{\left( { - 2x + 1} \right)^3}\) B: \(8{\left( { - 2x + 1} \right)^3}\) C: \(4{\left( { - 2x + 1} \right)^3}\) D: \(- 4{\left( { - 2x + 1} \right)^3}\)

设 \( A \)是 \( 3 \times 3 \)矩阵， \( B \)是 \( 4 \times 4 \)矩阵，且\( \left| A \right| = 1,\,\left| B \right| = - 2, \) 则\( \left| {\left| B \right|A} \right| = \) ______

(3) A. right B. ride A: right B: ride