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

2????????

3??????????

4?2021????

5?????

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

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

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

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

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

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

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

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