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

2???????????

3?????600

4???????

5??????

????????????1??8??? (??? ???)????????(PUB)?????(?“???????”)7?????????????,????????,?????????????,?,???????????????????

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

???????????????,??,????????????30??/???,?70??,?????+??????????????,???????

???,??30??????????????“????????”???

??????????1990???????,???????4???????????????/???????????????,??????12????????????????,?????“????????”?,????????22%???????

“??!”??????????????????????????????????,?????????60????26???????????????????,???????75%??????????????86%?????60%??????????????80%???????

??????,????????????????????“???????”??????????????,???????????3.24??????,????10????????/???????,????,??5G????(????)

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