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【填空题】
土层中的竖井结构可选择维护结构护壁后的()或()施工
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答案
明挖法,倒挂井壁法
解析
暂无解析
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中国特色社会主义进入新时代,意味着科学社会主义在21世纪的中国焕发出强大生机活力,在世界上高高举起了___伟大旗帜。
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