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

2??????????????

3??????????

4??????????

5????????

?????1??????6???????????????????? (?? ???? ?????????????????)1??6??,???????,?????????500???,???????????,??“?????????????”,?????

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

???????????,????????(??),??,???????????????(????)???????(??)??????????????????????????(?????????????)?????????????????,??????,?????46.54???,???160????????????????????????,??????8???????93.47????????2.31?????????????????????????14??????

“???45??30‰???,???,???”????

????????,???“???????”??????????,????????,???,??????????,?????????????????,??????,???????7???????,?84????,???????

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

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

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