ݹYӋ㷽
(һ)I(lng)ȡB(yng)Ͻėl
˻B(yng)ϱUU{ˆTM60ܚqŮɲM55ܚqŮM50ܚqNM55ܚqŮM45ܚq19971231ǰӹU{B(yng)ϱUM(fi)ҕͬUM(fi)ӋM15199811ԺӹU{B(yng)ϱUM(fi)ӋM15;ݺܻB(yng)ϱUUM(fi)ӋMҎ(gu)ݺܰI(lng)ȡB(yng)Ͻ䂀~~һ֧oˣͬrKֹB(yng)ϱUP(gun)ϵ
()B(yng)ϽӋl(f)k
1199811ԺӹUM(fi)ӋM15ģB(yng)ϽɣA(ch)B(yng)ϽˎB(yng)ϽɲֽM
219971231ǰӹ199811պݣUM(fi)ҕͬUM(fi)ӋM15ıUݺI(lng)ȡB(yng)Ͻ
B(yng)ϽɣA(ch)B(yng)ϽˎB(yng)ϽCa(b)N^B(yng)ϽIJֽMɣ
(1)A(ch)B(yng)Ͻһ걾ƽY20%;
(2)ˎB(yng)Ͻ𣺱ˎ~1/120;
(3)Ca(b)N125Ԫ;
(4)^B(yng)Ͻ
a=ݕrƽY
b=ƽc(din)Y
c=97ǰUM(fi)
^B(yng)Ͻ=abc1%
ƽc(din)YӋ㷽ʽ:
n=ƽY
m=걾ƽY
b=(92n/92m+93n/93m+94n/94m++һn/һm)/I(y)1992һ갴Ҏ(gu)U{B(yng)ϱUM(fi).