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在日常生活中①石墨、②碘酸钾(KIO3)、③CaCO3、④C2H5OH⑤Ca(OH)2⑥等物质都有重要的用途,选择上述物质的编号填入相应空格内:
(1)为防止碘缺乏病,常在食盐中加入______;
(2)制造铅笔芯的主要原料是______;
(3)我市“九江双蒸”酒中的溶质是______;
(4)家庭装修用的大理石主要成分是______.
(5)可用作固体干燥剂的物质______;
(6)可中和土壤酸性的物质______.
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