【单选题】关于双合诊检查,下述哪项正确
D.
检查方法是一手放入阴道,另一手按下腹部,双手配合进行
【判断题】发动机飞轮与曲轴装配后要进行动平衡试验。
【判断题】( )采用电子检漏前要清洁被测部位,防止污物和结重阻塞检漏设备探头
【判断题】采用电子检漏前要清洁被测部位,防止污物和结霜阻塞检漏设备探头。()
【简答题】人们经常说收益递增的存在是国家之间产生摩擦的根源之一,因为每个国家都希望能扩大具有规模经济的行业的生产。依据垄断竞争模型和外部经济模型评述这观点。 It is often argued that the existence of increasing returns is a source of conflict between countries,since each country is be...
【判断题】电子检漏仪的原理是空间有氟利昂制冷剂蒸气通过带电的钨丝电极时,立刻会引起电阻的变化,从而导致电路电流相应发生变化
【单选题】The imperfect competitor shown in Figure below:
A.
could be in a long-run equilibrium situation for monopolistic competition, since P = ATC.
B.
must be in a long-run equilibrium situation for a monopoly, since P = AT
C.
should shut down, since profits are zero.
D.
cannot be in a long-run equilibrium situation for monopolistic competition, since P is not equal to M
【判断题】Since 1980s, American Government and the monopolistic financial groups it represents have conducted the economic invasions of other countries, with the help of their strong political strength.
【判断题】艺术生产是马克思主义经济理论中的一个经济学术语,它也是马克思主义文艺理论中的一个文艺学概念。()