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