【单选题】无砟轨道施工前应测桥梁梁缝、隧道变形缝、( )、以及路隧、路桥过渡段结构缝的平面位置。
【单选题】下列哪个选项不属于产品差异中的人为或主管差异()。
【单选题】设k为回归模型中的解释变量个数,样本容量为n,要使模型能够得出参数估计量,不管其质量如何,所要求的最小样本容量为( )
【简答题】Human beings have used tools for a very long time. In some parts of the world you can still find tools that people used more than two million years ago. They made these tools by hitting one stone agai...
【单选题】_______ repeated claims that there were almost no merits, they finally made big merger proposals last week.
【单选题】某部门多年来生产任务完成得都很好,职工经济收入也很高,但领导和职工的关系却很紧张。请根据管理方格理论判断该部门领导属于哪种领导类型?( )