?? ? ??????????5.4??????
????:1????????:??diy???
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?????(?) ??:??