279期:=【02,03,04,05,08,10,11,15,16,17,18,20,21,22,26,27,28,29,32,33,36,37,39,41,43,44,45,49】开:27准
280期:=【02,04,06,07,11,12,13,14,17,18,19,20,21,22,24,26,27,29,33,35,38,39,40,41,44,45,47,49】开:07准
281期:=【01,04,08,09,10,11,12,13,17,19,24,25,26,28,30,31,32,33,34,35,37,38,39,40,41,42,46,49】开:?