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

2?????????500???

3???????

4???????

5???????

??2?????6?????????????????,?????????????????,??2?????????????4???,?????????????

???,???????????????????????????????????????????????????,???????,????????????,?????????10%?,?,??????????????????,???

????,?????,?????????,????????????????

???,????????????,?????????????,?????????????????,??????????????????????????????????(???????????? ?? ?????? ????)

????:????????????????