??
????????????,???1???????????????????,??????????500??,??????????????????,????????????253???????????????
??????????,????????????,10????????????,????
???????????? ?????????:???????,???????????,?????
??,??,??8000???,???????????1000????????????
????????????? ?????????:????1????????,??3.3??????,???????????????,????,?? ??????????????????:???
?????????
??????????????1???500?????????? ????????????????