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

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

3????????

4????????

5??????????

???????9???????????28?? (?????????? ???????????????)28???????????,??????????????????????????????????????,???????,?????????????10????

??,??????????“???????????????”???????????????????????????,??????????,???117??

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

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

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

?,????6?????????????????,3???????,???????????????5.4????????,???????

???10??,?????“????,???????,???????????????”??????,????????????,???,?????????????

??,??????????????????????????“??,???????”

??????????“??”,??(????)

???:?????