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A=[a1,a2,a3]是三阶矩阵，且|A|=2，若B=[a1-3,a2+2a3,a2-2a3,2a3+a1]，则|B|

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A=[a1,a2,a3]是三阶矩阵，且|A|=2，若B=[a1-3,a2+2a3,a2-2a3,2a3+a1]，则|B|为（）。

A 5

B 2

C 10

D 1

正确答案

C

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