?? ?????????? ??????5.4?
????:1???????:????
2???????
3???????
4???????????
5??????
?11?????22?????????? ??????????,?22??????????,??5.4?,?“??”?
??,?22?18???????45??20????????22????????20??40??20?????????????43???21?????29??,?20??????40???5.4???,???????????????23.2??????120.18??,??????????23.2??????????,????7.7??
??????,???????,???????????????,???????????,??????????????????“??????”????,?????????
???,????????????“???”,?????????“???”?
?????,22???????????????????20?40?????????4.7??(?) ???????????:??????