????:1??????300?????:???????

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

3?????

4?????

5?????????

???12????10?? (?????? ?)“??,???????????????????50???,?????1???,????!”12??????????????????10??,???

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???,?109.5??????????,????????????????????10??????,?4.45????????????????4.27???????,????????54.1%?86.6%,??????????????????????????“??”,?,?,??????49??,??????????

??,??57??????????????2000????,?????????????????,??????????17.77???????????4.64????????;?(??)????,???????,???“??”?????????????????????

“???,???????,?????????????”???,??????????142????,????20%,??????????????????13???

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