某兴趣小组利用如图装置测定某种补钙剂中的含钙量.查得资料�该补钙剂的主要成分是碳酸钙其他成分遇到盐酸时无气体生成且不含钙元素.� Template




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tomski某兴趣小组利用如图装置测定某种补钙剂中的含钙量.查得资料�该补钙剂的主要成分是碳酸钙其他成分遇到盐酸时无气体生成且不含钙元素.� coloring