have a glass of salt water.the first water,get the concentration of 3% ,the second plus the same
have a glass of salt water.the first water,get the concentration of 3% ,the second plus the same
amount of water ,get the concentration of 2%.the third plus the same amount of water again,the concentration is?
amount of water ,get the concentration of 2%.the third plus the same amount of water again,the concentration is?
英語人氣:358 ℃時間:2020-03-29 22:03:01
優(yōu)質解答
有一個玻璃的鹽水,最初的水,的說道3%的濃度,第二個加相同的
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