????:1???????:??????

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

3?????????

4??????????

5???????100?????

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

?????????10????15?????,??????,???,??????????

???????????????,??????????????????,??6?????????????,??????,??????????????????

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

??????????????????????????,??15?????????????????30??,?????

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

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

????????????????????? ?????:10???15????,????????????????????????????,?????????????????????,9?????????????????60%,?????????????????10??????????????85%,???????????10???????15??????????????,??????????????????90%,???

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