题目

—Would you mind helping me with my maths?—Not at all. I'd like . 答案：【1】to按四舍五入法则取近似值：2.096≈2.102.10（精确到百分位）；-0.03445≈-0.034-0.034（精确到0.001）；599836≈6.0×1056.0×105（精确到万位）