245期：⑴≤04,07,10,11,13,14,15,16,18,19,21,24,26,27,30,34,35,39,42,43,46,47,48,49≥开：18准
246期：⑴≤03,05,08,12,14,15,16,17,20,21,23,25,27,28,31,32,34,35,41,44,45,46,47,48≥开：30错
247期：⑴≤03,06,07,09,10,11,12,13,14,18,19,23,25,27,29,31,32,33,37,38,39,40,45,47≥开：40准
248期：⑴≤04,05,08,10,13,14,16,17,18,19,22,23,25,26,27,28,29,30,31,32,37,38,42,43≥开：--?？