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【单选题】
(1) 如果一个由有限个向量组成的向量中的任一向量都不能由其余向量线性表出, 那么这个向量组线性无关.(2) n+1个n维向量线性相关.(3) 设P是一个矩阵, 那么线性方程组AX=b与线性方程组PAX=Pb同解.上述断言正确的是:A.
(1) (2)
B.
(1) (3)
C.
(1) (2) (3)
D.
(2) (3)
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举一反三
【单选题】Picasso's ______ ability was apparent in his early youth when he started drawing sketches.
A.
writing
B.
artistic
C.
reasoning
D.
literary
【单选题】A _____ estimate prepared from layouts, sketches and flowsheets, should be accurate within (-10, +25%). A . Parametric
B.
. Definitive.
C.
. Budget
D.
. Bottom up.
E.
. Top down.
【单选题】_____ wrote a number of little sketches of "cockney characters". His first book, Sketches by Boz appeared in 1836.
A.
Elizabeth Gaskell
B.
William M. Thackeray
C.
Charles Dickens
D.
Jane Austen
【单选题】The sketches made in Antibes by Picasso are mainly about _____.
A.
the luxury life of the rich
B.
the rich life on the beach
C.
the miserable war time
D.
his charming mistress
【单选题】_________ is the main character in Hughes’ satirical sketches.
A.
Dunbar
B.
Sandburg
C.
Masters
D.
Simple
【单选题】59 A _____ estimate prepared from layouts, sketches and flowsheets, should be accurate within (-10, +25%).
A.
Parametric
B.
Definitive.
C.
Budget
D.
Bottom up.
E.
Top down
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