309期:〓〓半数01,04,05,06,08,09,11,18,19,20,21,22,23,24,25,27,32,34,37,40,41,42,43,45》开09准
310期:〓〓半数01,03,05,06,14,17,18,20,23,26,27,31,32,34,36,38,39,40,41,43,45,46,47,49》开04错
311期:〓〓半数02,04,05,06,08,09,10,13,15,16,18,19,22,24,25,26,27,29,31,33,34,35,36,39》开？？