题目A, B 均为 n 阶正交矩阵,且 |A| = -|B|,则 |A + B| = (A. 1B. 2C. 0D. -1$A, B$ 均为 $n$ 阶正交矩阵,且 $|A| = -|B|$,则 $|A + B| = (A. 1B. 2C. 0D. -1题目解答答案C. 0