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

2??????????

3???????????

4?????

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

??????????2???????????12??????????????? (????? ????)???,13???????????6??????????????????????????????,????????????????????????,???????????

???????????????????,???,??????????????75.03??,?????

?“?????????”?????????,???????????????????????????62.90??????????,??????????????,??????????????????????????,??,???????????,??????

????????,?????????????????,????????????103.81????????????,????,?????????????????????????????

???????????????????,?“??????”???,?????????1:6?????????????????????????????????

?????????,??????????????“???????”??????????“????????????”????????????,??????????????????12?2:1????,?????????????“????”?

13?????????????????,?????????????????????????????,???????,???

????,???????13????????,31????U?????

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

????????????U???????????????????,???????,????????????

???????????????????,???????????????4×6???????4×7.5????????????,?????????????,??????1??????????????2??????

???????????????????7.5????????????????????“??”??????????????????????????,?????????????????,???????????????????????????????,??????????(??) ?????????????:??????????