?? 11????????50% ??????????????
????:1??????????:????wx
2????????????
3??????????????
4????????????
5??????????
?????11?????30????? (? ?????????????????)????????????????30????????,11????????????????50%,??0.2??,???????????????????6???????????50%???????,??
????,??,??0.3?????????????????????????0.9??????????????;???????????????;?????????????????????????????????????
??????,11?????????????????,??50%,???????????????????,???????????,????????60%???,??;???52%??,????;??55%??????????????????????,??????????????????????,??????
????,?????????????????????,???????????????,??????????,??????????????????????????????,???11???????,???????????????,???(???????????????) ??????:???