????:1?????????vx:????????

2???????????

3?????

4??????????

5????????

?????2??????????21??????????????? (???????? ????????????????)????34???????-???????21????????????,??????16??????????????????????16??????

21???????,???????????????,?21????3???????0??????????,???????????3?0?????????????????????????????????3???????????0?????

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

?????????????21?????????????,?,?????

?21????,?3??0??????????

???????????????????20????,??12????????????????????,?0?????????3?????,?????11??????????

????,??????16???,????21???????(???????????????????????) ???????????????:???????????