2????11????,??????????????????????????????,???,??????,????,???“????????????? ?????”???????????????????????????,??????????????????????????????,?????????????????,??,????????????,????,??????????“?????????”???,??,???????????“??”??????????????(???? ???? ??? ?????????????? ???)
???????????????:????????????????????????
???????«????»????????????
??2?????????0.4%
????:????????????????
??????????? ???????????
????????????????3???
??-??????????????1-0??
??????????? ???????????
??2?????????0.4%
??GIF-???????????1??????
??????????:????,????!
????????????????high?
????????????????????
?????!???????????
?????!???????????
???CBA????3???8???6???
?????????????????????
GIF-????!?????????3???
????????????10???????
???:??????????????????
???:??????????????????
??????????????:???????
??????????????3???
??-????????????????????
??1???2?!??????????????
??:??????????????