?????? >???????2 >??????? > ???????2??????1000????????

???????2??????1000????????

?????????????????????????2016-08-18

???????2,???????2??????,?????1000?????

1000?????620??????(300???????10?????????)

3????120?????

???????5?Σ????50?Σ?3???60?????3??270??

???3??180??????????60?Σ?3??2700??

3????????????120+60+180=360????

????????90????3??270?????2430??

???????=2430+270+2700=5400??

???????10????????=700??

??????6100???ж????????2700??

???????2???1—15???????????

???????2???1—13???????????

???????2??????????? ????1-13???????????

????40407???????2???>>>>>>>

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