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

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

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

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

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

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