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

2???????

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

4?????????

5???????

????12????????2????????????? (??????????? ?????)11????????????????????,??????????,??????????????????

???,???????????11????????????????????,??????,11??????????????,?30??????“U”?,??????,?????????????????3%,?????20%,?????60%?????????11????????????,30?,???1-10????3.91?????

????????????2?????????????????,11???,????100???????????????,??????????????15%,????10?????????????????20??11.7%,??26.3%?

????????????????????????????????????,11?,??18763??,???????????20??????????,???????????????????1.5??“?????”,?????????????1.5????,??????????????????????,????11???????;??????????????11?????????50%?

???????????????????,11????,??,?????????????,?7??????????????????????????,?????????,???0.36%,?????????????????2.40%?

??????????,11?????????????,??300??????????23.4%,?????????????????

??,???????????,11??????3633.5??,???????16.6%,???????????,???9??????????44.3%????,???????????????????????????11???????????

???????????????9???????????????????????,10?“???????????????”,11????????????“??”??????????????,????????????????100???????,?????

?????????,????“??,??,???”???,???????“????”?????(???) ?????:??