饮水的适宜氟浓度一般保持A、0.4~0.7mg/LB、0.5~1.0mg/LC、0.6~0.9mg/LD、0.7~1mg/LE、0.8~1.5mg/L
水中含氟量以多少为宜,该浓度既能有效防龋,又不致发生氟牙症A、1mg/LB、0.5mg/LC、0.5~1.0mg/LD、1.5mg/LE、2.0mg/L
饮水氟化预防龋病的适宜浓度是A、0.1~0.3mg/LB、0.4~0.6mg/LC、0.7~1.0mg/LD、1.1~1.3mg/LE、1.4~1.6mg/L
在进行人工饮水加氟时适宜的氟浓度一般应保持在A、0.3~0.6mg/LB、0.7~1.0mg/LC、1.1~1.4mg/LD、1.5~0.8mg/LE、1.9~2.2mg/L
我国饮用水卫生标准中规定饮水中氟化物的含量不得超过A、1.5mg/LB、2.5mg/LC、0.5mg/LD、1.0mg/LE、2.0mg/L
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
饮水氟化预防龋病的适宜氟浓度是A.0.1~0.3mg/LB.0.4~0.6mg/LC.0.7~1.0mg/LD.1.1~1.3mg/LE.1.4~1.6mg/L
饮用水中氟含量的卫生标准是( )A、0.5mg/LB、1.0mg/LC、1.5mg/LD、2.0mg/LE、5.0mg/L
饮水加氟的适宜浓度是A. 0.3~0.5mg/LB. 0.5~0.7mg/LC. 0.7~1.0mg/LD. 1.0~1.2mg/LE. 1.2~1.5mg/L
在进行人工饮水加氟时适宜的氟浓度一般应保持在A.0.3~0.6mg/LB.0.7~1.0mg/LC.1.1~1.4mg/LD.1.5~0.8mg/LE.1.9~2.2mg/L
可引起氟骨症的饮水氟浓度是A:1.0~1.5mg/LB:1.6~2.0mg/LC:2.1~2.5mg/LD:2.6~3.0mg/LE:3.0mg/L以上
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
我国饮用水卫生标准中规定饮水中氟化物的含量不得超过下列何值()。A、1.5mg/LB、2.5mg/LC、1.0mg/LD、0.5mg/LE、2.0mg/L
一般来讲,高氟区的界定是饮水中氟的含量超过()A、0.5mg/LB、1.0mg/LC、1.5mg/LD、2.0mg/LE、2.5mg/L
饮水氟化预防龋病的适宜氟浓度是()A、0.1~0.3mg/LB、0.4~0.6mg/LC、0.7~1.0mg/LD、1.1~1.3mg/LE、1.4~1.6mg/L
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
单选题适宜的饮水氟浓度为()。A低于0.4mg/LB0.4~0.7mg/LC0.7~1.0mg/LD1.2~1.5mg/LE1.5~2.0mg/L
单选题饮水氟化预防龋病的适宜氟浓度是()A0.1~0.3mg/LB0.4~0.6mg/LC0.7~1.0mg/LD1.1~1.3mg/LE1.4~1.6mg/L
单选题饮水的适宜氟浓度一般应保持在()A2.1~2.5mg/LB1.6~2.0mg/LC1.1~1.5mg/LD0.5~1.0mg/LE0.1~0.4mg/L
单选题可引起氟骨症的饮水氟浓度是()。A1.0~1.5mg/LB1.6~2.0mg/LC2.1~2.5mg/LD2.6~3.0mg/LE3.0mg/L以上