?? ??????? ???????2.2????????
????:1??????:???????
2??????
3???100????????
4????????
5???????
???????????1??????????????????????7? (?? ? ?????????????????????)??7????,?????6.8??,???????????????????????????2.2????
????????,1??7?9?5???????????,?????????(?????28.50????????,???????????????87.45?)?6.8??,???????????10??????????????,????????????
???,???????,??????????????????????????????????????????????????,??????????????
????????????????1500?????
???????????????????????????????,??,???????????????????????????????????????2.2??????????????,?????????,?????????????????????(???) ???:?????????????