??????1???????????Ч??????

?????????????Ч???????????????????????????????????????????￡?

??????У??????20???????20???????20????????60??

?????????1:1:1??????????????????600??

???????????200????200????200???????????????????????????д???????6?Σ?

100%???????????????????????200?????????1200??????????????????????

??????У???????40???????10???????10????????60??

?????????4:1:1??????????????????600??

???????????400????100????100???????????????????????????д???????6?Σ?

100%???????????????????????100-400?????????????600-2400???????600????????????????????????????????????????????????????????????????м????????α???λ???????????400*4+100+100????????1800??

?????????1500-1800??