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

2???????

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

4???????

5??????????

12???????18???,?????????????

???:????,????«???:??»????????????????“???????????”??????TGA????????“?”???“??”??????,?????????“??????”??????

???????,???«??????:????????????»???????«??»?????400????????“??”????,“????”?????

???,?,??????“?????IP??”?????????????,??“???”;?????????????????,??????????????????????;???????“????????????????”????,??,?????,?????

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

??,????“???”?????????,??“?????????”?,???“?????????”???????????“??”?(???? ???)

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