????1??????8???????????????? ?????,??????“????”???

???????????:???????????1??????????7?????????,??????????????????????“???????????????”????????????

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

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

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

?? ????“????” ???:????????????? ????????

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

2??????150??

3??????

4????????

5???kb???

????1??????8???????????????? ?????,??????“????”???

???????????:???????????1??????????7?????????,??????????????????????“???????????????”????????????

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

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

??,????????,?????????????????????????????????????????????????,?? ?????????:???