??????????????????????? ???????????????? ???????佫??????? ???????????佫??????

???????????????????????????????????????????????????????????????????!???С????????????????????λ!

?????????????3??????????????????????????2?????????????????????????????

??????????? ?縲 ??????????縲????????(???????????4?????縲???????????С??4??????????4?????????)

?????????????????????????????????

??????????Т????——???????????????????40%????????????????????20%

???????????????10%??????????????????????????5%???????

??????????????——????20%????????????????????????????Ч??

??????????????——?????????10%????????????25%???????????????

???縲??????——???????????????35%

????????????????+??????????????????????????????????????????????????????

????????????????100%*0.5=50%??Ч????

?? 100%*1.2=120%??

???? 100%*1.5*0.6*=90%

???? ?? 100%*0.5*0.8=40%

?? 100%*0.8=80%

???? 100%*1.5*0.8=120%

?????25%???????50%???=100%???????12.5%???

?? 100%*0.5*87.5%=43.75%

?? 100%*87.5%=87.5%

???? 100%*1.5*87.5%=131.25%

?縲 ?? 100%*0.5=50%

?? 100%

???? 100%*1.5*65%=97.5%

???????????.3?.3?.4??(??????й?????)

???? ????????????50%*3+120%*3+90%*4= 870%

???? ?? 40%*3+80%*3+120%*4=840%

??? ?? 43.75%*3+87.5%*3+131.25%*4=918.75%(????????????????????)

?縲?? 50%*3+100%*3+97.5%*4=840%

????????е????!?????????????????!

?????????

??????????????????? ????????

??????????????淨(jìng)???????

??????????????????????????????????

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