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

2????????

3?????vx

4???????

5????????

?1??????27??????????????? (??? ???????? ???????????????)???27??(?“?????”),????????,??69??????????????????,?????5%?

??,????????????????????????????????233???,????????????????????????????????67???????????

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

??????????,???1??????????26?????????,??743?????????????,?13%???????12306???,??????????????(1??????????????28??????????30??),??,?????????(1???31??)???,????????????,?,?????????????????????????,?????????????(2????3????????????????4????????????)??,????????100??????????

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

????????:??,????????12306?,??,?????????(????????)

?????:???