[单选题]
陕西真题-2019-依据《陕西省建设工程工程量清单计价规则》(2009),平整场地项目适用于建筑场地厚度在( )cm以内
±10
<span style= font-family: "Microsoft YaHei"; font-size: 13px;>±<|span>20
<span style= font-family: "Microsoft YaHei"; font-size: 13px;>±<|span>30
<span style= font-family: "Microsoft YaHei"; font-size: 13px;>±<|span>40