?? ??? 4???????????“???????”??
????:1???????????:????????
2?????vx
3?????
4???????????
5?????????
??10??????????????????????????????????15????????????????? (????????????????? ???)15????,??,?????????????,?????????????????????“?,??????,???????,???”??????
???????????? ??????????????????????????1????????????2???????????????????,????40144?????????
“???????,???????,???????????????2300???,??,?????????????”????????????????????
?????????????????????,?“????????--?????”????????,?????,??????????????,???????????????«???????????»??“?????????????????”????????????????????“?????????????”;????????????“?+??????????????”???,????????????????????????????????
“?,????????,??,???????????”???(?????)
???:????????????????