??2?????????19????????????(?????)??,?????2????????18??,???????????????????????????????????????,?25%??????,????4???????2??????

??,???????????????????,?,????,???10%????,????????????????,????????,????????25%??

  ??

?????????,???18???,4???25%?,??????????????

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

????????????????????????????,??????????????????,???19???(??)

???????:????????????

??

??:???????????,??????????,??????????????