????:1?????qt????:???????

2?????????

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

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

5?????vx

???????????????2???6?? ???,6???????,??,??2?????????,????????????19?????????????????????

???????,6????????????3????????(????)???????,????????,???,???????????

  ????????????????:?????

???????,???????????????????????????,?????????,?,????????,????

????,?,??????,???????,???????

????«?»????????????????????,????????????,???,????????????????

???,????????????1994??????????????????????,??????7?????????????,???????????????,???????6??3????????,?????,??????,???????????????????

????:?????