СС??????????????????????????50??????????????????????????,ū???+7????????????????,??????????????,??????????Χ?????????????????,???????????????,???麣???????????,???????????????????????????,?????????????????????,?????????????????????. ????,??????,??????????,???????????! ???,????????R,??????????,???????13??; ???????СR,???????????????,???????14,15??; ????????R,???????????.. ??Щ???????
????,???????????1~9????????????????,?????????????????,???????????????????..
OK. ????9???????,??????????????????,???????ζ??,????????1????. ????????????????????9~11???,????????12,???????з???,??з???,???????????????,?????????12???
???徭????,????????????????????????????仯,???????????,?????????. ?????????,?????30%??μ?,???????????????????,?????31%~59%???,???????????,????????60%???,??????????????.
?????????????????????4??6?????.
??????,??????????????????????,??????????,?????????????????? ??????????????????????????????. ???仰?,???60%?????,?????????,40%???????????????0%; ??????40%?????????,???60%????????????????40%,?????0%.
??????????? 1 2 3
??????9??10 23% 46% 69%
??????10??11 20% 40% 60%
??????11??12 14% 28% 42%
??????12??13 11% 22% 33%
??????13??14 9% 18% 27%
??????14??15 6% 13% 20%
?????????????,?????????9~13???????????,????????14?????,??????????????????????????7??,??????????13?????,?????????????,????????????μ????汾????????.
???????????????,?????????????????? ???????????????,??????????????????????ε?,?????????????????????????,????????????. ??????????????????????????+9????????,?????????????С????????.
????С??,С?????5F,3????15F,???????????????,?????????????80%,??????????,???80%????????,??????????????????,???9~10????10??11?????3??????,???????????????; ??????С??80%?????,?????????????????????????40%????(???)????,????????????6???;?????????,?????С???????????,????????????,??????ζ????,?????????????????????,????????????????????; ????2??С??????????,????????????,?????????????????????????,????????????.
??????????,?????????????????????13,????13??14?????,??????????,??????????R??RP,???СR???,150???СF,?????С?????????,???С????????,????????????????????,???????????????2????,???????????????,????????????,???滻?????????????,???????СF,27%+15%=42%?????,??????11??12?????. ????????,????????????????????13???????14. ????????????,?????,????????
????????????????????????????????????????40407???????40407????????
