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

2???????

3?????

4???????

5???????vx????

??11??27?? (??? ?)??27?,???,????????????,??????

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

????????20???????,????????11??????????22?,???70?,?????????????????6??????????????????

?300??,????????8.6%????????????????????8.7%????????????,?????????????????????,?????????????????????(?) ??????????:???????????????????