??????:??????????????????????
?2???????????????21???????????? (???????? ???? ???????)�??????????????,?????�???�?????�??,????�??????????�??,?????????
??,???????,??,???????????????,??,?????????????
??????:???????????????????????????????????:???????????????????????????????,????????:?
??:????�??????�
???????,?,?????????????????????????????????????�???????????�????,????????????????????,????
???????????????,??????????????�?????????????????????�??,????????�?????�,???????????????????????,???
????????????????,?,?????????,??????????????????,????????????????????,???;????,???????????
????????????????,?????,???,????????????800???????,??????????2000????3000????????????,???
????????????,???????????,?????????
?????????,?????,????????????,????,????,??????
????????????:??????????�?????�
?????????????,??????????????�????�?????�??????�???????????????????,???????????????????,????????????????????????????????????????,??????
�???,????????????,???????????????????????????,??????????�?????,????????,???????
???,???�??�?????,??,?????????????????,?????????,????????????????????????????
????????????????,????????????,?????;??????,???(??)