????:1?????sn:???????????

2?????????

3??????

4???????????

5???????

??11???25? (?????????? ??)?????“??”?,?????????????????????25???,46??,????“????????????????”?????6000??????,???58%?

???,??“?????”??????????????120?????????,?????????????811.32???????????,??????110?????,?????????????????????????????????????????

???????“????”???,?????????,??“??????”??202????????,?????????????????,??11??“???????”????

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

1978?,“??”????????????????????????“?”??,??28.4%???????????????????????????????“????”????????????????9?68????????????????46???,??“?????”??190???

46???????????,??“??”?????????,???“??????”“?????”“???????”??,??????????????????????????????????????????????,?????????(????) ???????:???????????????