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

2?????vx

3??????????

4??????????

5???????

11?????2??,???????????????????(????????)????????,??10???????????????300????

??????,???65????,?????10???,??340??,??????????,??????,????,?????,????30???????????,???“?????”,???????????????????“???”,“???????”???????????????????(?????????? ?????????????? ?)

???:????