????:1???????9?????:????????

2?????????

3??????

4?????

5???????

????????????7???????????3????????(?????????? ??? ????)?????7?????3??????????????????

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

??????:??,???????????????????55%??????????????,???

??????????????????,?,??????????????;?????????,???????????;???????????,????

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