题目内容

含有零向量的向量组必相性相关.

A. 对
B. 错

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心理技能是通过练习形成的能影响个体心理过程和状态的心理操作系统。

Fill in each blank with an appropriate article.1. The firm has _____ annual turnover of 75 million.

2. She is too nice _ girl to do _ thing like that.

3. _____ healthy society can tolerate a lot of criticism.