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

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

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

??,?????????????“?????”?

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

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

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

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