?? ??????????“??”??6000???
????:1???????????:?????????
2?????????
3???????vx
4??????????
5??????????
?????????11??????25???????????????? (??????????? ??)??????????????“???????????????????????????”?????????????????,??????????25?????????????,46??,???“???”??6000??????,??58%?
??,??“????”??120??,??811.32???,??????????110???????????,????????
???????????????“??????”??????,?????,???????“?????????????????????”??202???,??????????????,????11?????“??????”???
???,?????????????????????????????????????????????????????????
1978????,“??”?????????“??”????,???28.4%???????????????????????????????????????“???”?????9?68??????????46?????????????,??????????????“??”????190????
46?,?“??????????”??????????????,???“???”“??????”“???????”??????????,??????????????,????(??) ???:???