????:1???????vx:??????v

2??????????

3????????????

4?????????

5???????400??

???????????????6???????????16?? (??????? ??)????15??,?,????,?????????“???????”?,??????????,??

???????????????? ????

???,6?????15????????20??16??8??,????????34.6??????????,???135.4???????????16??8??,????4??????

“??,??????????,??”?,???????????

??,?,??????????,?????????????,?????????????,?????????,????????????,??????????????????????,????????????13?????

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

??????,??15???,????115??????,???????????????,???????????????(?????????)

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