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

2???????

3???????wx

4???????

5???????

????????????12???19?? ?19????????????????,?????????????????,????????????????????????4000?????????????????,?????5000????????????????,????????????????

??,?????????,????????????,??????????????????416??,???????????????????????????????????,????????800?????,???????????????????????????????????????????????????

?,????????????????????,?????????????,??,???????11.7%?

???????????????????????,?????????????,??????,?????????????(?????????) ??????????????????:???????????