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

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

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

??,???“??????”?

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

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

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

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