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

2????????

3?????sn

4?????

5???????

??????????2?12???????????? (????? ?)??12???7?,???????????????4???????3?????2?,4????????????????????????????31????26???22?,?????19????????????

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

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

??????,?????????????,????????????90?????????,??????????????????183.50??????????????????????,??????,?????????????

?11?????,??????????,?????7???8??4?19?????,?????????????????7??????,??2??????,?U?????????????????1????

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

????????????????????,???4x5??????????????????????????????????????????53???????????????59?3?,??????????????????????1?25????2,??????????????

?????????????????4x7.5?,??????????????????????????????????????,?3???????????2?????,???????????6???????5???????????

????????????,??????/??????,?????????????????????????????????/?????????/??????????????

?????,?????????,?????????,???8?“00??????????”?“05?”,?????,??????????????

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

2???12?,?/????????????????????????????????(?)??? ????? ????

????????,??????????????????????/???????????????????????106.96?,????????????????????????,???171.25????????,????????????/???????173.31?????????????????/?????159.98????

????????????/????????????????????,??????????????/??,????????????????/?????????

?,?31??????26?22????????????,79??????????????,???????????2011???-??70???????????????12????????????13?????12??,???7????7?????13?,?????????8???????????

??????????????????????,???8:5???????,????,?????;???9:5?????????????,????????????

???????????,??????,?????????2:1????(??????????)

???:??