???????????????

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

??????????1?????7????? (????? ??)1??7???,??????????6.8?????????,???????,??

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

?,?10????????????1?????????????????????,10??????????????????20?1??????????,20??????????????50??4?????4???????????1???????7?????????10??43??,???????????????????????????????

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