????:1????????????????:??95????

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

3???????????

4???????

5?????????

?2????????????2????????????????? (????? ?)?????(?????)?????????????2??????????????1????????????????,??????????

?,??2????1??,????????????,??

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

??2??1????????????????????????????,????????????????90%???

2?2??????????????,???????????????????????????,???????????????(????????????????????) ????????????????????:??