?? ? ??????????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??(????) ??:????????