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

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

3????????

4?929598?????

5???????????

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