【单选题】When perfectly competitive firms in an industry are earning positive economic profits,
A.
we would expect entry into the industry.
B.
we would expect stability in the industry, since it is in long run equilibrium.
C.
we would expect exit from the industry.
D.
we do not know whether there would tend to be entry, exit, or stability in the industry.
【判断题】银具有杀菌消毒的作用,用银制作餐具用于日常生活大有好处。
【判断题】不要带食物进实验室,不要随便乱动实验仪器。
【判断题】Please indicate whether each of the following sentence is true or false in grammar.people should always pay for music and not download it illegally. Down loading illegally is bad for the music industr...
【判断题】Task 1 Listen to the passage and decide whether the following statements are true (T) or false (F). 1. CMG Logistics Company is the leader in the transportation data services industry.
【多选题】2014 年十八届四中全会通过了《关于全面推进依法治国若干重大问题的决定》,明确提出全面推进依法治国,加快建设法治中国,开启了中国特色社会主义法治道路的新征程。全面依法治国的总目标是( )