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单选题 如果
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D. 
学科：默认课程
时间：2026-03-31 08:55:21
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题目1单选题
下列矩阵中不是初等矩阵的是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/e0b4d23a11fdb193cb43120435cb0910.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/e4f8ec6148d73762df02385b8017b8b5.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/82c89cd8d1fd737ac829b7d33a9aab21.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/fde89ccc3435397f38056839e74c1786.png">
题目2单选题
下列矩阵中不是初等矩阵的是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/9e858481cd5e0738111f18306a451b62.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/e93b0271ff2a1b2cfbb97ffccf75ac6e.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/82c89cd8d1fd737ac829b7d33a9aab21.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/fde89ccc3435397f38056839e74c1786.png">
题目3单选题
如果<img src="https://tihai-oss-cloud.itihey.com/img/675c80138f52bbde9f51798d0b9d1de6.png">,则<img src="https://tihai-oss-cloud.itihey.com/img/0973d0a930186919c3071852edbd98a6.png">( )A. <img src="https://tihai-oss-cloud.itihey.com/img/b44cf4d6fc51eb2614e12bb38e87b752.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/a75c48d76e313086be51ca8603f0c18d.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/8fa25755efe91d518e88f92e09c320df.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/f0def7b8bbe179c318d186f4dc20deef.png">
题目4单选题
如果<img src="https://tihai-oss-cloud.itihey.com/img/7a5969642adbe417f81dd8c1d0a5924e.png">,则<img src="https://tihai-oss-cloud.itihey.com/img/0973d0a930186919c3071852edbd98a6.png">( )A. <img src="https://tihai-oss-cloud.itihey.com/img/0bd1143d17492ab4e31107f3dd012fc2.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/4bb91b32ee7efd96f4cde1ed6ce58ceb.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/d7437429c9fc95c6e9c03e7da8efaa88.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/dea450d917f436a6f92663081e349351.png">
题目5判断题
由单位矩阵<img src="https://tihai-oss-cloud.itihey.com/img/f865925fb205887d2156066d59d4f71a.png">经过初等变换得到的矩阵是初等矩阵A. 正确B. 错误
题目6判断题
初等矩阵一定是可逆阵A. 正确B. 错误
题目7判断题
初等矩阵和单位矩阵等价A. 正确B. 错误
题目8判断题
<img src="https://tihai-oss-cloud.itihey.com/img/a0b9b41b03004fccdd537ac13e1d959e.png">A. 正确B. 错误
题目9判断题
<img src="https://tihai-oss-cloud.itihey.com/img/e623dffccdf22e26fbefa9c3ab097d5f.png">A. 正确B. 错误
题目10判断题
<img src="https://tihai-oss-cloud.itihey.com/img/05552a9e8152dfe69cfd158751a2c70c.png">A. 正确B. 错误
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