?:6?1??8?????????20???77.12%

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??8?????????23???????????? ?????????23??,?????????????,?????6????????1?8????20?77.12%,??1.57???

???,?,?,????????????,???????6?1?8???20??,???????????471???????????????,???????????451??????????????????;?,6??????????1?8?20??????????145.68????,?????17985????,??7.31%;8??20??18965?,??????????,8?10???????????19449??,?????

??????,?,??????????????6??1???8?20?77.12%,?1.57???

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