未分类题A. Siting on her desk. B. Sitting at her desk.C. Standing near her desk. D. Walking on her desk.
单项选择题垄断厂商利润极大时( )。 A．P＝MR＝MC B．P＞MR＝MC C．P＞MR＝MC D．P＞MC＝AC
未分类题 甲旅行社与乙广告公司签订了在某市火车站入口处明显位置设置广告牌的合同，乙广告公司把广告牌安置在该入口较偏僻的地方。乙广告公司的行为违反了《合同法》的()原则 A.自愿 B.公平 C.诚实信用 D.当事人法律地位平等
单项选择题一个市场上，只有一个企业，生产一种没有替代品的产品，这样的市场结构被称为 ( )。 A．垄断竞争 B．垄断 C．寡头 D．不完全竞争
未分类题A. Tim is learning to repairjeep. B. It is difficult to find Tim lately.C. Tim is too busy to help them now. D. Tim finds it difficult to pass his exams.
