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在《海淀名题全析全解》（中国少年儿童出版社）第７０页上有这样一个题目： 为测定黄河水的含沙量（即每立方米水中含沙多少千克）是多少，某校课外活动小组取了１０ ｄｍ３的黄河水，称得其质量是１０．１８ ｋｇ，请你计算出黄河水的含沙量（Ｐ沙＝２．５×１０３ｋｇ／ｍ３
On the 70th page of “The Complete Analysis of Titles of Haidian” (China Youth and Children’s Publishing) on page 70, there is such a question: To determine the sediment content of the Yellow River water (ie, how many kilograms of sand per cubic meter of water), a school The extra-curricular activities team took 10 dm3 of Yellow River water and called it a mass of 10.18 kg. Please calculate the sediment content of the Yellow River water (P sand = 2.5 × 103 kg/m3