?? (??????)?“?”??“??????” ?????“?”?
????:1????????:??????
2???????
3?????Vx
4????????
5????????200??????
?2????????8???????? (???? ???)2??????????????????8????????,?????????,????????,???????????,???,???????????
???“???????????”??????????????????????,?????????????????,???????????????????????????,?????????????,?????????,??????????
????????????,??????,???“????????????????”??,??“????+???”????????,??,?????????60%????40%????????,?????????
??? ??“???,????????‘??????????’,?????????,??????????,?????,??????????,?????????????????”???
“????,???????????????????????????,???????????????????????”?????,???????????????????????????????,?,???
?????????????,??????,????????????“?????????????????”?????????????,????,?????????????????????????????????,???????,?????????????,????“???????”,???????????????????????????
“??????????,???????,???‘??’?????,?????????‘?????????????????,?????????’??????,??870????,????????3600?????”??????,????????????,??????????,??22?????,????????61.15??????,?????2000????????(??????)
???:?????