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

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