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