?? ????“??”???“????”
????:1?????:????
2?????????????
3???????????
4???????????
5??????
????6??15???????????? (?? ???????????????????????????)??????????????????,??????????????,??????1.57?,???,??????????????,????,????????????“???”???????,???,?????????????“?????????”??“?????”?
??,“????????????????????”???????,??,??????????????4500????????,??20??,???,???????????????????????????????????,????????????,??????,?????“??+??”???????????
??,????????“??”,?????????????????,???????????????????????,???????,?“???”??
???????,??????????????,?????1??????,?????????,1????????????????1000???,??500?????
??????????????,???????“???????????”??????“?????”,??,??????????????????????,????“??”???(????????????????????????) ???:?????