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