【单选题】It was after he had a thorough investigation ________ came to know the actual state.
【单选题】It was after he had worked on the project for months _____ he found how to solve the problem efficiently. [ ]
【简答题】背景资料:
某商业建筑工程,地上6层,砂石地基,砖混结构,建筑面积2400m2,外窗采用铝合金窗,内外采用金属门。
在施工过程中发生了如下事件:
事件一:砂石地基施工中,施工单位采用细砂(掺人30%的碎石)进行铺填。监理工程师检查发现其分层铺设厚度和分段施工的上下层搭接长度不符合规范要求,令其整改。
事件二:二层的现浇混凝土楼板出现收缩裂缝,经项目经理部分析认为原因有:混凝土原材料质量不合...
【简答题】歧管压力表上的三根软管为红色: ;蓝色: ;黄色: 。