适宜的饮水氟浓度为()。A、低于0.4mg/LB、0.4~0.7mg/LC、0.7~1.0mg/LD、1.2~1.5mg/LE、1.5~2.0mg/L
适宜的饮水氟浓度为()。
- A、低于0.4mg/L
- B、0.4~0.7mg/L
- C、0.7~1.0mg/L
- D、1.2~1.5mg/L
- E、1.5~2.0mg/L
相关考题:
饮水的适宜氟浓度一般应保持在A.2.1~2.5mg/LB.1.6~2.0mg/LC.1.1~1.5mg/LSX 饮水的适宜氟浓度一般应保持在A.2.1~2.5mg/LB.1.6~2.0mg/LC.1.1~1.5mg/LD.0.5~1.0mg/LE.0.1~0.4mg/L
单选题适宜的饮水氟浓度为( )。A1.2~1.5 mg/LB低于0.4mg/LC0.7~1.2 mg/LD0.4~O.7 mg/LE1.5~2.0 mg/L