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有100升纯水的储罐,每分钟接收5升2 g/L的盐水;完全混合的液体每分钟流出5升。30分钟内盐的数量是多少?
有100升纯水的储罐,每分钟接收5升2 g/L的盐水;完全混合的液体每分钟流出5升。30分钟内盐的数量是多少?
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