?? ??????? ?????3500??????????????
????:1???????:??????????
2??????????
3?????????
4???????
5???????
??1????????17?? (?????????? ??)?????????????????????17?,?????1??5????????????,??,??????????????3500?(?,?????)??????????
1???17?,??? ?? ????? ???,?????????????????????,?????,???????????????????X???????????????,??????????,?????,?????????,??????????????????????????????????????,???3500????????????????????
??????????,????????????????,?????????????,?????
????????,??????????,???????????????,????(??????)
???:??????