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

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

3????????????

4??????

5???????

12?28????????????,???????????“?”??????????

??,??????????,?????????,???

??,??“???????”?????????6????????28??,????6????????,?,???????“??”??,???,?12kg?

??,???????“??”??????????,??“??????”?“????”??,?????????????,?????????????“??”?????????????????????????????,“???????”??,???(???????? ????????????)

??????????:??????????????