【单选题】Which of the following statements is true about potential competitors in an industry?
A.
They threaten the profitability of established companies.
B.
They are usually encouraged by established companies.
C.
They find it easier to enter an industry when the entry barriers are high.
D.
They find it easier to enter an industry when established companies have economies of scale.
E.
They usually have an absolute cost advantage over established companies.
【判断题】( )使用台虎钳夹紧工件时,不准用锤子敲击或套上管子转动手柄,以免丝杠、螺母或钳身受力过重而损坏。
【判断题】用物距相距法测凹透镜焦距时,物距取正值,相距取负值。
【单选题】An industry in which a few firms cater to the entire market is called:
C.
a perfect competition.
【单选题】多个样本比较的等级资料宜采用
D.
Wilcoxon-Mann-Whitney法;
【多选题】建设监理单位在施工准备阶段的主要工作任务有()。
【单选题】有关施工准备阶段建设监工作的主要任务,不正确的是( )。
【多选题】业主在工程项目实施准备阶段的主要工作任务包括( )。
B.
组织落实项目建设用地,办理土地征用、拆迁补偿及施工场地的平整等工作
D.
向承包方提供施工场地的工程地质和地下管线等资料
【多选题】在施工准备阶段,监理工作的主要任务有()。
【单选题】Which of the following factors in an industry is most likely to cause excess capacity?
A.
Technologically outdated production units
C.
A company's investments in newer production technology
D.
Lack of competition from new entrants
E.
Limited number of outlets in certain locations