方程组的一组基础解系由()个向量组成。
Read the following paragraphs and answer the question.
While both groups did better than chance would predict, nearly half the participants in each group made the wrong choice two or more times. Two people g
的一组基础解系由()个向量组成。
的一组基础解系由()个向量组成。的一组基础解系由()个向量组成。