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ZX-84AA726A662023年12月D卷 · 第 12 题
2023年12月D卷 · 原库模块 2 · Q12 原库参考解析
According to a set of standards, pure biodiesel fuel can contain a maximum of 0.001% phosphorus by mass. If a sample of pure biodiesel fuel has a mass of 310 grams, what is the maximum mass, in grams, of phosphorus the sample can contain to meet these standards?
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