?? ?????????30??????
????:1???????500?4???:??????
2???????????
3???????
4???????
5????????
??????1????5? ??5????????,?(????????????)??30????,???100????
?,????????1?3?,???????????2.6???;?????1??4??????2???????????50???,?????????4.1????????;?????????1?????5?5??????30??????????,??????????????3.3???????????
???,????,?????,?????70?????????,?????????????????,???????????,?????????,?????????????
???,???85???,?18?2.5??????(?) ???:???