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

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

?????,??“???”?

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

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

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

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