????????????

????:?????????:????500??????

??2??5??? ?????“???????”5??,?3?4???4??7.3?????,?????9??????

??,?????“??”?

??????????,????(?S)???,??,???????????,??????????????????????5???

??????,???,??????????????????????????????????????

??“????????????”?????,???,1??????????????????21?2?????????????3???142??????????????,??25????????????????2?2????????????,??65????????46.3%,??68.6%?

????,???????,?,?????????????(????????????????) ???:??????