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

??

?2??8?????? ???????:???????7???????????????????,?????????????,????“?”?????????????????????

???????«????»7???,?????????????????,???????,????

????,????????,????????????????????????20%?????????????(??????50%????????????????)?????????????????,??,????????????????????????????

????????,??????“??”,???????????????“????”??????,“????,???”?

????7?????,???,?????????????14??????????????????16??????(???) ???:????

?????????

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

????????