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