1.ˮ|(zh)
Ҏ(gu)4מɳ|(zh)ÿO(sh)Ъ(d)M(jn)ˮڼ̶ͶDc(din)ͶDc(din)ײˮĨ⻬e6~8ƽמO(sh)aW(wng)ÿ2_(ti)0.9ǧߣEORO-
2ͣʽC(j)ˮԴɽˮˮ18~24ˮ棬ˮ|(zh)o(w)Ⱦ2.B(yng)
B(yng)ǰÿʯҏص(jng)ԇˮȫͶ\~(y)NB(yng)ܶȞ700β/B(yng)Į(dng)Ҫ30%ʳ}Һ~(y)w
3.
\~(y)(g)wL(zhng)25ϣԔzʳˮϣֵ≥35%Ͷιǰëˢ̸Ƀʳ_(ti)ذͶι^(gu)Ҫ0.5%غùأ50ǧDϰ100ˣͶDʞ飺~(y)w50~200ͶDʞ10%~4%;~(y)w200~1000ͶDʞ4%~2.5%;1000Ϟ2.5%~1%,20犃(ni)
\~(y)(du)Ҫ^ߣ(du)ز׃m(yng)ԲճҪ_ˮ5ppm,ˮ|(zh)ҪˬL(fng)꣬زE׃≺ҪѲ^ȡЧA(y)ʩ
ڳB(yng)ֳ\~(y)^(gu)Ҫÿ30죬þW(wng)һЩ\~(y)x(li)،(f)֮B(yng)ֳ@DZC\~(y)B(yng)ֳ߮a(chn)Ҫg(sh)ʩ(jng)^(gu)\~(y)_(d)70%_(ki)ʳϲ(f)ѡ