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【单选题】
设 均为n 维列向量,则下列结论正确的是( )
A.
若 ,则 线性无关;
B.
若对任意一组不的数 , ,则 线性无关;
C.
若 线性相关,则对任意一组不的数 ,有
D.
若 ,则 线性无关
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