??????????1???????????21?????? (?????? ?)???????????????????A?????21?????(???????????????????????)?????,????????,??????????????????

?,???????????????????3.89%????????3.26%,????A??????,?20%???,?????????????????????????????????9%?

??????????????,???????“1+N”??????????????????????????????????????“1+N”?????????????,??????????????100????????,?????

????,????:?,???????;??????,??;????????????????????????,??

???,??,???2.16%??;??????,???????10%?

????,??,????????3242????????,??????0.05%;???????????10305??,????????????0.48%;???2112?????????????,?????0.36%?(?) ????:??????

??

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