11??????????????50% ????????

????:?????????????:??????????

??????????????11??????????????????????30?? (???? ?????)???????????????30???????????,11??????50%,????0.2?????,?????????????????????6??50%?????,?????

???????????????????,???????,??0.3??????0.9???;?????;??????????????????????????

???,11??????????,??50%,????????????????????????????????,??,??60%??,?????;?????????????????52%???????????????,?;?????55%?????????????????????????,??????????????????????????,??

????,????????????????,????,?????????????????,??????????????????????,???????????????11????????????????,????????,????????????????(??) ??????????????:????