【判断题】【消耗次数：1】
矩阵的初等行变换不改变矩阵的列向量组的线性相关性和线性组合关系。
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【单选题】
对于线性相关和线性无关，下列说法错误的是（）。
①
所含向量个数大于向量维数的向量组一定线性相关
②
如果一个向量组线性无关，则该向量组中一定不包含零向量
③
如果一个向量组线性相关，则至少存在一个向量可以由其它向量线性表示
④
如果n阶方阵的行列式为零，则该矩阵的列向量组一定线性无关
随机题目
【单选题】
—Thank you for your MP4 player. I’ll ask Mary to take it to you soon.—_____. I’ve bought a new one.
①
No sense
②
No hurry.
③
No way
④
sorry
【单选题】
— I can’t find my mobile phone. I’m sure it’s in this room. — _______. I’ll call you with my phone. When it rings, you can follow the sound.
①
Excuse me.
②
Good luck
③
Don’t worry
④
ok
【单选题】
一Susan, will you please go and empty that drawer? 一 ?
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What for
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What is it
③
How is it
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When is it
【单选题】
—I feel so nervous about the National English Speech Competition tomorrow. —_______.
①
I really envy you
②
Glad to hear that
③
Take it easy
④
very good
【单选题】
— How about going to the cinema? — ___________
①
Enjoy yourself!
②
Good luck!
③
Sounds like a good idea!
④
very happy
【单选题】
— Could you please help me choose an Mp4 player online?— ________. My computer doesn’t work.
①
I don’t agree
②
I hope so
③
I’m afraid I can’t.
④
i did