1.含碳酸钙80%的石灰石(除其中的碳酸钙之外不再含钙)中,钙元素的质量分数为:A 80% B 40% C 32% D 50%2.硫酸亚铁可用于治疗缺铁性贫血.某贫血患者每天需补充1.40g铁元素,则他服用的药物中含硫
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![1.含碳酸钙80%的石灰石(除其中的碳酸钙之外不再含钙)中,钙元素的质量分数为:A 80% B 40% C 32% D 50%2.硫酸亚铁可用于治疗缺铁性贫血.某贫血患者每天需补充1.40g铁元素,则他服用的药物中含硫](/uploads/image/z/7625665-1-5.jpg?t=1.%E5%90%AB%E7%A2%B3%E9%85%B8%E9%92%9980%25%E7%9A%84%E7%9F%B3%E7%81%B0%E7%9F%B3%28%E9%99%A4%E5%85%B6%E4%B8%AD%E7%9A%84%E7%A2%B3%E9%85%B8%E9%92%99%E4%B9%8B%E5%A4%96%E4%B8%8D%E5%86%8D%E5%90%AB%E9%92%99%EF%BC%89%E4%B8%AD%2C%E9%92%99%E5%85%83%E7%B4%A0%E7%9A%84%E8%B4%A8%E9%87%8F%E5%88%86%E6%95%B0%E4%B8%BA%EF%BC%9AA+80%25+B+40%25+C+32%25+D+50%252.%E7%A1%AB%E9%85%B8%E4%BA%9A%E9%93%81%E5%8F%AF%E7%94%A8%E4%BA%8E%E6%B2%BB%E7%96%97%E7%BC%BA%E9%93%81%E6%80%A7%E8%B4%AB%E8%A1%80.%E6%9F%90%E8%B4%AB%E8%A1%80%E6%82%A3%E8%80%85%E6%AF%8F%E5%A4%A9%E9%9C%80%E8%A1%A5%E5%85%851.40g%E9%93%81%E5%85%83%E7%B4%A0%2C%E5%88%99%E4%BB%96%E6%9C%8D%E7%94%A8%E7%9A%84%E8%8D%AF%E7%89%A9%E4%B8%AD%E5%90%AB%E7%A1%AB)
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