ˉ???????????????????????????淨(jìng)??? ??????ˉ???????????????????????????????С??????????′???????????????????????淨(jìng)??? ????????????“?????”?????????????????????“??????”??????????????????????????????????????????????——????????????????????????????齫??7????????23???????????????????????????????????????????????????????????? ![]() ?????????????????????????“????????·”??????С?????????????????? ????? ??????飺????????*2+?????*2+????*2+???? ????????????????????????ó?????? ????? ??????飺???*2+???+?????????*2+?????*2 ??????????1???????2????????????????+???+???+????+?????+????+?????+????(1+4+4+2+2+2)*2=30??? ??3???? ????*2??????*1????????*2???????????*2?????????????????! ![]() ???????????????????????鹥??????????????????????
PS??????????????????????????????????????????? |