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

2???????

3????????

4??????????

5?????????

?9????????20????????? (?????? ????)“???????????????,‘80???’‘90??’?????80%?”??????????????20?,???IP,??????,“?”??????????????

????????????????????,??????????????,????“?????”“???”???????????,????“?????????”????

4????2????,??,???? ???? ????????

??????????,?????1????8??,????1.16???,???????903.8?????,?????????????14.2%?16.1%,????15.7%?

??????????,???????????,??,??????

???????,??????????????????“?????????????????????????????”??,????????“??”“????”???IP?;???????,???????????????????????“?”??,??????;???????????????????????????2000??????,?????????????“??”????“??????????”?

??,????“???”,?????,?102?????????????????????,??????????200??????????????????????

?????,?????????????,???????,“?‘80??????’‘90??’?80%”?

“??”????10????,??“80??”???,“????????????????,????????????,??,?????”?(?)

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