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分类: 数学2 (军队文职)
发布时间: 2023-11-03 09:29
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设
,则A11+A12+A13+A14等于:(其是A1j为元素a1j(j=1,2,3,4)的代数余子式)
A.-1
B.1
D.-2
正确答案是C
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