饮水加氟的适宜浓度是A. 0.3?0.5mg/L B. 0.5?0.7mg/L C. 0.7?1.0mg/L D. 1.0?1.2mg/L E. ...

作者: tihaiku 人气: - 评论: 0

问题饮水加氟的适宜浓度是

选项 A. 0.3?0.5mg/L B. 0.5?0.7mg/L C. 0.7?1.0mg/L D. 1.0?1.2mg/L E. 1.2?1.5mg/L

答案 C

解析这是一道自来水氟化的原则方面的选题，刘大维等认为自来水加氟应在Dean规定的三条原则基础上遵循6条补充原则。饮水氟含量的适宜浓度应保持在0.7?1.0mg/L之内。

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