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分类: 数学3 (军队文职)
发布时间: 2023-11-03 09:29
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A.I(R)是R的一阶无穷小
B.I(R)是R的二阶无穷小
C.I(R)是R的三阶无穷小
D.I(R)至少是R的三阶无穷小
正确答案是D
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