?? 28?? ????“????”?????“??”??
????:1???????:???????
2??????????
3????????
4????????????
5???????
??????,??,???????????????,?????????????????????????????????????……??,??28????????????
??????????47??????,????????????????????????19??????,?????,????????????“????????????”,?,?????????“?????”???????????0.001??,??????????,“??????”?????????????????????????,??????????
(?? ?? ????)
???????:??????