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

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

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

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

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

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