????????????
???2?????5????? ??“???”5???????,??3??4????????????????????4??7.3??,????????????9???
?,?????“?????”?
????????????????????????,????????????????(???S)????????????,????,?????,???5???
?,?,???????
???????????“??”??,????,1???21????2??3???142?????,??????????????25???????????????????????????????2?2?,?????65??46.3%,??68.6%?
????????,?????????????????????????,?????,???(????????????) ?????????????:????
??
???:????