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

2?????????

3?????cs

4????????

5?????????

??????????2????????????????17???? ?(????????????????“????????”)17??????,?????????37.7%?,?2????????????

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

??????????????????,??35????,?5???????????????????????????,???,??????????,????????????????,???????

???????????,???????????????,???(54.3%)???????????????,??????????2????????,???????????????????????3.5????????????

???????????????,???,??,????????????(46.6%)???????

?????????“?????????”????????????,?,?????12??????????????????17???????????????????12.5%?18.4%,?????????????????????????,??(???) ??????:???????????????