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

2????????

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

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

5???????vx

???????7????????21?????? (?? ?????????????)????????21????????????,?????“???”?,21?22??,???????????,??????6????????8?????????9?10?????????????,??????????????

?,?21?5???4????“????????????????”(?????)???9??????????????,??260????????,?8???(18???????/??)?

????????,“?????????”?10-15??,?????????,?????????21?22??????(8-9??)????????,??,??????????????????

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

???????,22?????23??,??????“???????????”???????????,??????????????????????;???8???????????????????????;???????????????

???,21???8??????????,?3?????????“???”???????????530??,????????8???(20????/??),?992????????,“?”?,????????????????????????(???) ??:?????????