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四、根据下面的文字材料，回答问题。2007年湖南各季度企业信心指数始终处在135以上的景气高位。其中一季度为137.85，二季度为137.76，三季度137.33，四季度为135.47，表明企业家对我省宏观经济运行的信心保持了稳定。四季度长株潭三市的企业家信心指数平均为143.29，表明企业家对三市的经济发展前景看好。四季度各大行业企业家信心指数与三季度相比升少降多。其中交通运输、仓储和邮政业、批发和零售业以及住宿和餐饮业企业家信心指数分别为108.68、130.79和123.76，比上期上升3.5、0.76和1.68点；工业、建筑业、房地产业、社会服务业以及信息传输、计算机服务和软件业企业家信心指数分别为135.29、143.63、138.07、143.75和154.39，比上期下降2.87、2.19、7.38、1.15和2.46点。各种登记注册类型企业家信心指数有升有降。2007年集体企业、股份有限企业和外商及港、澳、台投资企业的企业家信心指数分别为112.39、148.14和148.97，比上期上升1.93、7.65和9.34点；国有企业、股份合作企业、有限责任公司和私营企业的企业家信心指数分别为135.18、130.3、131.29和120.3，比上期下降1.8、9.06、7.38和6.92点。大型企业家信心指数上升。四季度信心指数为152.7，比上期上升5.56点；中小型企业家信心指数为125.58，比上期下降2.05点。从特殊分组看，四季度上市公司和乡镇企业的企业家信心指数为139.38和131.03，比上期分别上升15.07和0.42点。国家重点企业和国有控股企业的企业家信心指数分别为156.81和133.71，比上期下降6.57和0.73点。国家试点企业集团成员的企业家信心指数与上个季度持平。 按统计中涉及的大行业分类，第二段中涉及的大行业数是：（）
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