????:1????????????:????????

2?????

3???24?????600??

4???????

5????????????

??1??????????????7???????????????? (???????????? ??????????? ????????)??7????????????????????,??6.8????,?????????????????????????????????????????2.2??????????

?,1??7????9????????????????????5??,?(?????????28.50??,???????????87.45????)??6.8?,?10??????????????????????????????,?????

???,???,????????????????????????????????????????,??

????1500???

?????????????????,???????????????,???????????????????????????????????????2.2????????????,????????,???????????????(?????????????) ??????:???????????????