?? ????????????:???????3.41???
????:1???????????:????
2?????????
3???????
4?????????
5?????????
?????8???????19?????????????????? 19??????,??“??”?????,?1-7??,???,?3.41??,?????????????????????????????62.34%,?????????1817.6??(???????????????????)?,?52.09%?
???,?,?????????,?????????????????????????“???”???“????”,?????(?????????)
????:??????