?? ?????????? ?5.4??????
????:1??????????:??????
2?????
3????????
4??????
5?????200??500????
???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????(???????) ?????????:???