????????????????????????BB????
?????????????10????10???? ??????~????????????????????
?????????BB????9 ????35?? ????????ˉBB????11.4 35?????????????21?? ????????100+ ????????????????10?????????35?????????????????
????????? ??ο?BB??????
??????????????BB ?????? ???????? ??????????汾BB???????????????????BB????????
???BB?? ?????????????10?? ???????10??????????
????????
????????????????1??????????????????
????????????????????? ??????BB??????????????????????????
????????? ???????????????4-5?? ????BB??????????????????4???? ???????5????????????
??? ??????????????????
????????????????????????????????????????40407???????40407????????
