【判断题】【消耗次数:1】
凡等价的向量组都含有相同个数的向量。
正确
错误
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相关题目
【判断题】 若两个向量组等价,则它们含有相同个数的向量.
①  正确
②  错误
【判断题】 如果向量组Ⅰ与向量组Ⅱ等价,Ⅱ与Ⅲ等价,则向量组Ⅰ与向量组Ⅲ等价.
①  正确
②  错误
【单选题】 向量组和向量组等价的定义是向量组()
①  和可互相线性表出
②  和中有一组可由另一组线性表出
③  和中所含向量的个数相等
④  和的秩相等
【判断题】 等价的向量组必有相同的秩。
①  正确
②  错误
【判断题】 等价的向量组未必有相同的秩
①  正确
②  错误
【判断题】 含有零向量的向量组必线性相关
①  正确
②  错误
【判断题】 含有零向量的向量组必定线性相关。
①  正确
②  错误
【判断题】 向量组和它的极大无关组之间等价。
①  正确
②  错误
【单选题】 在下列所指明的各向量组中,( )中的向量组是线性无关的.
①  向量组中含有零向量
②  任何一个向量都不能被其余的向量线性表出
③  存在一个向量可以被其余的向量线性表出
④  向量组的向量个数大于向量的维数
【判断题】 含有m个向量的向量组线性无关的充要条件是其秩为m
①  正确
②  错误
随机题目
【单选题】 It was a(n) _______ achievement ― no one has ever won the championship five times before.
①  single
②  unique
③  only
④  sole
【单选题】 There are many children()behaviour is generally unacceptable.
①  who
②  whom
③  whose
④  that
【单选题】 Happy New Year to you. ____________
①  The same to you.
②  Yes, I am happy.
③  What about you.
④  Very well, thanks.
【单选题】 She was so _____ in her job that she didn’t hear someone knocking at the door.
①  attracted
②  drawn
③  absorbed
④  concentrated
【单选题】 A good public speaker can _______ the audience (听众)at the very beginning.
①  convey
②  portray
③  exaggerate
④  hook
【单选题】 How was your trip to London, Jane?________
①  Oh, wonderful indeed.
②  I went there alone.
③  The guide showed me the way.
④  By plane and by bus.
【单选题】 Every means _______ been tried to solve the difficult problem.
①  has
②  have
③  is
④  are
【单选题】 the newcomers found it impossible to ____ themselves to the climate sufficiently to makepermanent homes in the new country.
①  suit
②  adapt
③  regulate
④  coordinate
【单选题】 Why not go and have dinner in a restaurant? ____________ It’s too expensive.
①  Why not?
②  I agree.
③  I am afraid not.
④  I’m sure.
【单选题】 Please write a report()the above subjects are to be covered.
①  which
②  in which
③  that
④  in that