?? ??????????????????????
????:1???????:????????????
2???kb???
3???16k??
4????????
5????????150???
????12????????25?????????? (????? ????????????????????????)?25?,???????????????????????????????????,?????????????????????????“??????????????”“?”“???”“????????”??,?????
??,?????(????????????????)??23????????????,?????????????????????????????,???????
??,????????,?,?????,?????????“????????????”???????,????????????????????,????????????;????????????????????,???71??????????????617????????,?????????????????????????2453.5??(?????????) ???????????:??????????