与氟化亚锡牙膏相容的摩擦剂是A.碳酸钙B.焦磷酸钙C. 二氧化硅D.不溶性偏磷酸钙E. B+C

作者: rantiku 人气: - 评论: 0

问题与氟化亚锡牙膏相容的摩擦剂是 A.碳酸钙 B.焦磷酸钙 C. 二氧化硅 D.不溶性偏磷酸钙 E. B+C

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答案 B

解析

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