?λ????????????????????????????????
?λ????????????????????????????????
????????????????????????????????к??????????????????????????????????????????????????????????????????
???蹫???????????????
???
1??
???(??3)??1 ???????? 0.7 ???????1 ???????? 0.7 ???????(?????????????????????????)
????(??1)??1 ???????? 0.9 ???????1 ???????? 0.9 ???????(?????????????????????????)
2??????????????????????????? ??????*1 ??
3????????(??3)??{(????-????)*0.7*(1±???????±??????±????)} +{ (??????-10) + ??????}??
4???????????{(????-????)*0.9*(1±???????±??????±????)} +{ ??????*3 + ??????}??
????????????(???)
1?????????=????????1=????????2=???????????????????и???????ɡ?
2??
??????????????? 346 ??(1246-900)??
????????????????? 301 ??(737-436)??
?????????? 20% ?????????????????? 250 ??(301÷1.2)??
3??1 ??????????? 0.7 ?????(250/346=0.72≈0.7)??
?????????????(???)
1???????????????????? 1737 ???????????????? 16 ????????????
2??
????????? 90 ??(1737-1647)??
??????????????????????????? 70 ??(823-737-16)??
?????????????????????? 58.3 ??(70÷1.2)??
1 ??????????? 0.7 ????????(58.3÷90=0.65≈0.7)??
?????????(???)
1????????????? 3???? 2 ???? 1 ???岻??
??????{(????-????)*0.7*(1±???????±??????±????)} +{ (??????-10) + ??????}??
????????????(????)????1?????????=?????????1=????????2=???????????????????????? +20% ??????????鷨 +7.7% ?????????
2??
??????????????? 470 ??(1042-572)??
????????????????? 527 ??(1296-769)??
?????????????????????? 439 ??(527÷1.2)??
1 ?????????????? 0.9 ??(439÷470=0.93≈0.9)
1 ?????????????? 0.9 ??
3??????????????????????????? ??????*1 ??
??????????(????)
1????????{(????-????)*0.9*(1±???????±??????±????)} +{ ??????*3 + ??????}??
?????λ???????????????????????40407?λ??????????????
