??
?????????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%?(???) ???????:?????
?????????
?????A???????????????????????????