?? ????????????????????????????
????:1???????:??????
2?????VX
3?????
4???????????
5???????
???????12?????????????22?? ????????,???????????????,??,??????????????????????????????
??????:12????21????,????????5.713??????????????????,????????????,?2.95????????
??????????,?,????????“???????????”???????????,????,??????“???????????”?,?“???????????????”??????????????,???
??,?????????????????“???????????????????????????????”??,“?????????????????”????????????,???????????????,??????????????????????????? ??????????:??????