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

2?????v?

3??????

4??????????

5???????

????9????24???? (? ????????????)?????????????????24?????????????,???????

?????????????????????,???????,????????0.5??????????????????????????

????????????????????????8???,???????,??????????????????5?????????17??????,?,??????????????,?????????????,?????????????????????????,???????????,??

?????????????????????????????????,???????????????????,??,???????,??????0.5????

??????,??????????????????????????????????,??5000??,1.5????????????,???????????1500?????,????????????,???,????,??????

?????,????????????????????,?????25%????15%?(??????????????) ???:????????????????????