?? ????????????? ????????????? ?????????????????????????????
????:1??????????:????QT??
2???24?????600??
3???????
4???????v
5?????100???????
?????12??????????31??????????????? ??????????????????31????????,??????,??????,??????????,?????,???????????
?,??????????????????,????“????”???,??,??????“???????????????????????????”???????????????????????????????????????????,?????????????????????,???????????,??????,????????,??,?????????????????????????????,????????,?????????????????????,???,??,??????????,??????????,??????????????
???????????:???????????