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

2???????

3?????????

4???????????

5??????????

????????,???,???????,?????150???????

??,????48??????????????????,?????????????????5%?????????,??????20%??????????????????

?????12306????,??????,???????,???????,????????

?????,??????4?????:

??????8???,????????;

?????48????????????????????8??,?????5%??;

???24????????48?????????,?????????10%???????????;

??????????????????????24???????????,?????????20%?????????????????

?????????????,??8???,???????8????,??,???8????????,???????5%???????

???????????48??????????????????,?????5%????,???????????20%?????

???????????????? ??????:???????????,???????,??,??????????????????????,??????,??????,?????,?????????20%???????????,????,??????,???????????????5%???????????,????????,???????,??????

(??????? ?????????????)

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