????:1?????wx:???????

2?????????

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

4???????9?????

5???????

???6???12??(? ??????????) ???????????11????,6??,?????????????????,??(?????????????????????????;?????????;?????),??????????????????

?????????????????????????????????? ??

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

??????????????????????????? ??????????

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

??????,????3??,??6?????????????????????,??????35???,???????????8???????????,???????200??,????????????3???????????(???)

????????:????