1)c(din)}}ˮƷډAҺп^(qing)(dng)pHֵ4r(sh)Îȫʧ
2) ˎãVcSùƣ(du)m(yng)ԾеĽSɫ^(qing)(du)mԾеİϗUϗUҲһ⣬Ʒ߀(du)ùw˴w^wž(xin)ZЧ(du)cUɳT(mn)ٵcԗUo(w)
3) mðYҪˎSɫѪć(yn)ظȾѪYӌm(ni)Ĥ(du)ùwļԺiùwҲ^ïЧ߀ڹ؈Zίɷࡢ朡~(y)~(y)Nİ^첡~(y)~(y)(x)Ԡw~(y)İƤ_~(y)
4) ÷c
A. ÿˮ100(ԻˎӋ(j))B35
B. (ni)һÿwiţRx2.2ˣÿ34؈2-10ÿ23Ρ~(y)rؐ(li)50ÿ1Bm(x)57
C. o}ע(})һÿw20i13ţRlһ2؈15ÿ2
D. (ni)ע(})һÿwأ20-30iRţ2؈1-5ÿ2
E. ~(y)ȫ؝ÿˮw0.05-0.07ˡ