参考答案:A
对普通中小跨径桁式桥上部结构可釆用支架安装、无支架安装、转体和悬臂安装等;对于大跨径桁式组合拱桥,通常采用悬臂安装施工。 考点 桥梁工程施工技术
The release date for the documentary film about life in America is() , but theproducer still has a lot of work to do.
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