?? ??????? ????????2.2???????
????:1????????????:??????
2???300????????
3????????????
4?????????
5????????
??1??????????????7???? (?? ???????????????? ????????)????7????????????,???6.8?,??????????????????????????????????????????????2.2??????
???,1????????????7??9???5?,????????????????(?28.50??,??????????????87.45?)????6.8???,???????????????????????????10?????,????
??????????????????????,?????????????,??????????????????????????????????????,????????????
??1500??????????????
??????????????????????????????,?,?????????????????????????????????????????2.2???????????,???????????,????????????????(?) ??:???