竞争型企业不会因生产得多而使其产品价格下降,在短期,资本的投入是固定的,如果企业从其固定生产的工厂中尽可能多地生产出更多的产品时,他将使利润最大化。
参考答案:错
立直反射中枢位于()。
A.脊髓
B.延髓
C.脑桥
D.中脑
E.间脑
While enjoying himself in the amusement theme park, he heard a loud cry of pain; he _____ himself
around and ______ to see a girl had fallen off the swing and was crying for help. [ ]
A. turned; terrified
B. swung; was terrifying
C. turned; was terrifying
D. swung; was terrified