单选题我国现行水质标准氟浓度为( )A0.1~0.4ppmB0.01~0.05ppmC0.5~1.0ppmD1.1~2.0ppmE﹥2ppm

单选题
我国现行水质标准氟浓度为( )
A

0.1~0.4ppm

B

0.01~0.05ppm

C

0.5~1.0ppm

D

1.1~2.0ppm

E

﹥2ppm


参考解析

解析: 暂无解析

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