????:1?????:??????????

2?????

3??????vx

4?????????

5???00???

????8????????????????30?(??) 8??????30???????,????(??)????????????????????????????????????????????????270?????,?,?????

?????(?????????)?????? ?? ???

???????????,?????????10????????????????8???30??,????????????500?,??????6???????????????????????????,??4???????????1000????

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

??,???????????,??155?????,??????????1075.86???????????????????1000?2???????,????????????????,??????????

?????????????,??????????????“???”??,??????????????????????????,????????????????????,????,????

?,?????????????????,????????????????????????????????,??????????????????????????“??????”???(??)

????????:???