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

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

3??????????

4?????qt

5???????

?1????7???? ????????????,?????????1???6?????,?????????????????,?,????????????????????????,???????????????????48????

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

?????????“?????????????????”??????????????????????

???,????1????5?????????????????,?????????????,????,?????????

??6?????????????,??????????????????48????? ???????:???