?? ?????? ??????
?
(?????????)??100?????
(???)?:??????500??
??????2?????????8????,????????1500???????,???????1???????????45????85???????
????????:??
????????????????? ????
??2?????????0.4%
4?7?22?????????
«???»????????:???????
4?1?!??????????????????!
????:????????????????
???:??????????????????
GIF-????!???????????
????????????????
???:??????????????????
GIF-????!???????????
????????????346???????
???:??????????????????
CBA?????????????????
????:??????????????!
??:??????????????????
????:???????????????
????????????????high?
????????????????high?
??????????????4?????2??
????:??????????????!
???:??????????????????
???:??????????????????
4?1?!??????????????????!
4?10??????????10????13?
??:?3???????????