????????????20??????

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

????8??????31????? (??????? ??????????????????????)????????????8?????????????????31?????????????????,8??50.3%,?????20??50%?,???????

?????????????,???????,??0.6??????0.1??????????????;????????????????????????????????????????????????????????,??0.3?????2??????

??,8???????????????,?????????????50.3%,???????20??????????????????????50%????????,????????????????50%?,???????????

???????????????????,???????????????8?????,?????50.2%,?0.2??????????????????????,???????????????,???,??????

???,??????????????,????????????????????????????????????????55%??????;??????????,??,??????60%?????????

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