已知产量为500单位时,平均成本是2元,产量增加到550单位时,平均成本等于2.50元,在这个产量变化范围内,边际成本是( )。 A) 随着产量的增加而上升,并在数值上大于平均成本 B) 随着产量的增加而上升,并在数值上小于平均成本 C) 随着产量的增加而下降,并在数值上小于平均成本 D) 随着产量的增加而下降,并在数值上大于平均成本
【简答题】16-20.mp3: Section B Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. Both the d...
【简答题】A.assure B.interference C.talent D.welfare E.constant F.dread G.frank H.dumb I.repeatedly J.bet K.know better than that L.typical Our dad is (1)_________ of the older generation. You can...