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【单选题】
某工程地下二层，地上10层，基坑开挖深度约为8m，为271m。现场地北侧有建成大楼出入口，南侧有正在使用的两栋楼，场地地质条件较为复杂，基坑支护采用灌注桩及内支撑的形式，基坑工程安全等级一级。结构形式为现浇混凝土框架结构，采用自拌C30混凝土，内隔墙采用加气混凝土砌块，屋面，防水材料为3厚SBS防水卷材，外墙为玻璃幕墙。一层混凝土浇捣时，项目部针对现场自拌混凝土容易出现强度等级不够的质量通病，制定了有效的防治措施。本工程竖向传递轴线点的中误差应（）。A.
≤4mm
B.
≤5mm
C.
≤2mm
D.
≤2.5mm
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【简答题】66666666666
【简答题】A．They are difficult to read. B．They are slowly falling apart. C．They were not made from wood pulp. D．They should be stored in a cold place.
【简答题】A．They are difficult to read. B．They are slowly falling apart. C．They were not made from wood pulp. D．They should be stored, in a cold place.
【简答题】A．They are difficult to read. B．They are slowly falling apart. C．They were not made from wood pulp. D．They should be stored in a cold place
【简答题】A．They are difficult to read. B．They are slowly falling apart. C．They were not made from wood pulp. D．They should be stored in a cold place.
【简答题】A．They are difficult to read. B．They are slowly falling apart. C．They were not made from wood pulp. D．They should be stored in a cold place.
【单选题】下列基团从小到大排列正确的是
A.
烷基、醚基、酯基、酮基
B.
烷基、酯基、醚基、酮基
C.
烷基、酮基、醚基、酯基
D.
烷基、酯基、醚基、烯基
E.
烷基、酮基、酯基、醚基
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