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【单选题】
腘窝内容由浅入深依次为A.
胫神经、腘动脉、腘静脉
B.
腘动脉、腘静脉、胫神经
C.
腘静脉、腘动脉、胫神经
D.
腘静脉、胫神经、腘动脉
E.
胫神经、腘静脉、腘动脉
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twice as many cars as
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the same as
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the same that
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A.
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A.
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B.
eig(A) ,tril(A)
C.
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D.
diag(A), tril(A)
【单选题】已知 A 是矩阵,求 A 的对角矩阵函数是 _______ , 求 A 的下三角矩阵函数是 ______ 。
A.
第一空： eye 第二空： tril
B.
第一空： rank 第二空： tril
C.
第一空： diag 第二空： triu
D.
第一空： diag 第二空： tril
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