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

2??????????

3?????????

4????????????

5???????

????????????,?????????????????1????????????,?500???????????,?????????????,??????????????253????????????

??,????,10????????????,???

?? ?????????:??????????,????????????,???

???,????,????????????8000???,???????????????1000???

????????? ???????:???????????????????1?????????????,???????????3.3??,?????,??????????,???? ?????????????:???????