A profit-maximizing firm in a monopolistically competitive market can earn positive, negative, or zero profits in the short run.
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A monopolistically competitive firm faces a downward-sloping demand curve because there are few firms in the market.
A. 对
B. 错
多个窗口进行切换时,可用下列哪种组合键?
A. “Alt”+“Tab”
B. “Alt”+“Ctrl”
C. “Alt”+“Shift”
D. “Ctrl”+“Tab”
将一个应用程序窗口最小化后,该应用程序怎样?
A. 仍在后台运行
B. 暂时停止运行
C. 完全停止运行
D. 出错
在Windows 7k ,不能对窗口进行的操作是下列哪项?
A. 大小调整
B. 移动
C. 打开
D. 删除