【判断题】【消耗次数:1】
可逆线性变换保持向量组的线性相关性。
正确
错误
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相关题目
【判断题】 线性变换保持向量组的线性相关性。
①  正确
②  错误
【判断题】 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
【判断题】 线性相关的向量组,其部分组必线性相关.
①  正确
②  错误
【单选题】 线性相关的向量组,则其部分组[填空].
①  必线性相关
②  必线性无关
③  可能线性相关,也可能线性无关
【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
【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
【判断题】 向量组线性相关的充要条件是该向量组中至少有一个向量可由其余向量线性表示。
①  正确
②  错误
【判断题】 若向量组的秩为r,则其中任意r+1个向量都线性相关.
①  正确
②  错误
【判断题】 若向量组的秩是r,则其中任意r+1个向量是线性相关的。
①  正确
②  错误
随机题目
【单选题】 ______ is Edwin Arlington Robinson’s best character sketch telling the story of the well-educated and rich hero who is admired by the town people but suddenly shot himself on one night.
①  “MiniverCheevy”
②  “Richard Cory”
③  “The House on the Hill”
④  None of the above
【判断题】 Mark Twain, one of the greatest 19th century American writers, is well known for his international theme.
①  正确
②  错误
【判断题】 As a realist, Mark Twain concerned particularly about the local character of a region, which came about as “Local Colorism”.
①  正确
②  错误
【判断题】 The first American writer of local color to achieve wide popularity was Bret Harte.
①  正确
②  错误
【单选题】 The end of ______ marked the beginning of The Gilded Age, an age of excess and extremes, of decline and progress, of poverty and dazzling wealth, of gloom and hope.
①  the American War of Independence
②  World War I
③  World War II
④  The Civil War
【单选题】 In Henry James’ The Portrait of A Lady, the author tries to portray the young woman as an embodiment of ______.
①  the force of convention
②  the free spirit of the New World
③  the decline of aristocracy
④  the corruption of the newly rich
【单选题】 In his masterpiece The Portrait of A Lady, Henry James _________.
①  incarnates the clash between the Old World and the New in the life journey of an American girl in a European cultural environment
②  tells a story about a young and innocent American confronting the complexity of the European life as well as the American society
③  describes a young American girl who gets “killed” by the winter in Rome
④  tells about some Europeans who learn with difficulty to adapt themselves to the American life
【单选题】 At the middle of 19th century, America witnessed a cultural flowering which is called “_____”.
①  the English Renaissance
②  the Second Renaissance
③  the American Renaissance
④  the Salem Renaissance
【单选题】 In Dreiser’s Sister Carrie, which of the following statements is NOT true about the characters in the story?
①  At the end of the story, Hurstwood’sfamily are enjoying a happy life without him.
②  Being unable to make a decent living, Hurstwood at last commits suicide.
③  In spite of her success as a famous actress Carrie does not feel happy.
④  Carrie becomes rich and helps Hurstwood out of his difficulty.
【单选题】 Which of the following is not written by Henry James?
①  Daisy Miller
②  The Wings of the Dove
③  The American
④  Self-Reliance