?? ???????3258.9??????? ???????
????:1???????????:????7??
2????????
3????????????
4??????????vx
5???????
??10???????????????31??? (? ??????)???(????????)31???,????3258.9?????,???????39.7%;????????2523.6???,????????????????????????????35.1%?
?????????????,9????306.2????????????,????,???????????????????229.5????,??6.1%??????????????????75%,??????????????????
??????,9??????????,??????????????,?????????????????9????????????????,??????????????,???
?,???,????????????????????9???58.6%,???????????????????????????????4600????????????,????????
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