??6?????21?(???????? ?????????????)?,6????????21???????????????10????????????30?,??????????

???,?????,??????????????????????????4?????,???????,?????????????,????

????,??????????????,????????????24??;???????????????????????(??)

??????:?? “??????498???”????

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

????:1???????498???:?????????

2??????????

3????????????

4?????????

5??????

??6?????21?(???????? ?????????????)?,6????????21???????????????10????????????30?,??????????

???,?????,??????????????????????????4?????,???????,?????????????,????

????,??????????????,????????????24??;???????????????????????(??)

??????:??