其核心区别我个人认为, 从组织结构上来看在于他们的组织形式,而从结果上来看在于他们的稳定性。 这四种垄断形式之所以被叫做垄断形式,根据垄断的定义(a monopoly exists whena.
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5 students beaten, murdered by Mexican cartel in horrifically graphic