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