?? ????:????????????
????:1????????????:????????????
2?????
3????????
4????????
5?????????
???12??19?? (????? ????????????????????)?????,????,?????????????,??“??”?????????????,?????“???????”?
?????????18??????????????,??,????,???????????????????,???????????????????
??????,????????????????????,????????????,?????????“???”??“?????????????????”?
?????????????????????,??,???
????,??????????????????????????????????????????????????????????????????????????????????????????????????????????
??????,??,????????????????????????????,????????????????????????????????;????,????????,????,???3????????5????????????????,??????????????????????(????????????????????????)?????????????,??????????????
??????????,????????,?????,????????(Bti)?????????,?????????????????1?????2???????
??,????,??,??????????;?????????????????????,???
???????,??????,???,??????,????????(??????????) ??:???????