?? ?????? ?5.4??????????
????:1????????:????wx
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????????(?????) ???????????:????????????????????