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单选题 拨罐时若需留罐,其留罐的时间一般为( ) A. 5~15min B .15~30min C . 5minD. 30min
学科：默认课程
时间：2026-05-15 21:31:49
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题目1单选题
矩阵乘法满足的运算律:<img src="https://tihai-oss-cloud.itihey.com/img/32b786572d2027f75825ce71f51ad7e0.png">A. <img src="https://tihai-oss-cloud.itihey.com/img/96f38052ba6c5635554944727877d019.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/26d76956bee177dc3063fe84d390a462.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/7d859b904fded42a5de96cd6379bf5bb.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/d78d6efae9d53c6707aa5dc7baa3936e.png">
题目2单选题
已知矩阵<img src="https://tihai-oss-cloud.itihey.com/img/e1b7fd5c40aa5f99fee90b1e57d3d6eb.png">,则<img src="https://tihai-oss-cloud.itihey.com/img/ebdb8c89b37c7c16d799d4dd486b8240.png">等于()A. <img src="https://tihai-oss-cloud.itihey.com/img/ca8847e82fb523b5f61f4ae0167bc39b.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/47a1ebedc90c9ea33c9f20816a82b61e.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/e936c5e317abd0756470995e29324843.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/9a72137b5cdd66e0c76fed8ee6d6bfdd.png">
题目3单选题
矩阵的转置:<img src="https://tihai-oss-cloud.itihey.com/img/176a4b14c7d29cc4f1e9da72483c886a.png">A. <img src="https://tihai-oss-cloud.itihey.com/img/6629ecea2dd54fda63aa02aeee0ab4f9.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/4638f27239962b9ff6b8763938bba152.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/8033cf4a3835f9a84925488abf83b495.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/30faf8df548aae26ac445f6d96e30800.png">
题目4单选题
设<img src="https://tihai-oss-cloud.itihey.com/img/5883d449338268a6d1959df11b013ce4.png">则<img src="https://tihai-oss-cloud.itihey.com/img/24ab5274831980ee52ffae4d0c4e6a77.png">A. <img src="https://tihai-oss-cloud.itihey.com/img/99f64913033ae23b1c727f4247488244.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/794ce279e784c8f4e76420874a7ff5e8.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/644a481b321dca9354a6ea09859ecebe.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/eeb3f85a8d0a86d9101b55a838415a4b.png">
题目5单选题
矩阵相乘的条件:<img src="https://tihai-oss-cloud.itihey.com/img/df3314f2ebce2b4f253f13ae25b39391.png">A. <img src="https://tihai-oss-cloud.itihey.com/img/dc7e3dc195dbd82182ae30eb21dca5eb.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/1a8216a6df51a8f6ce04329a9896daf7.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/ca42f1f51c1ba692a48a719e76a7a72d.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/f8d8b7f13e4fb96cb4bf3a621cb9e59a.png">
题目6填空题
方阵的行列式:<img src="https://tihai-oss-cloud.itihey.com/img/73073a126ab88bbea750b5298e5b2412.png">题目7填空题
矩阵的行列式:<img src="https://tihai-oss-cloud.itihey.com/img/995508a7c432965daf3bd11ddf6262b4.png">题目8判断题
判断正误:设A、B均为n阶方阵,若AB=O,则A=O或B=OA. 正确B. 错误
题目9判断题
判断正误:矩阵的乘法满足交换律A. 正确B. 错误
题目10判断题
判断正误:设A、B、C均为n阶方阵,若AB=AC,则B=CA. 正确B. 错误
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