我国适宜的饮水氟浓度为A.0.5~1.0mg/L B.1.0~1.5mg/L

免费题库2022-08-02  24

问题 我国适宜的饮水氟浓度为A.0.5~1.0mg/LB.1.0~1.5mg/LC.0.7~1mg/LD.0.7~1.2mg/LE.0.5~0.9mg/L

选项 A.0.5~1.0mg/L
B.1.0~1.5mg/L
C.0.7~1mg/L
D.0.7~1.2mg/L
E.0.5~0.9mg/L

答案 C

解析
转载请注明原文地址:https://tihaiku.com/yiliaoweisheng/554217.html

最新回复(0)