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 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 分类:岩土工程师 题型:选择题 查看答案