???????2,???????2????,???????2СR????
???????2????СR?????
????150??????????????????160????3?????480?????????50,3??150??
????3??135??????????35?????800?????????550???????5500????????720??
????????150?????????120????????5500+720-3000=3220??????????????
????4570??????????????????????Щ???????????????????????Щ?????
???????2??????????? ????1-13???????????