【判断题】If marginal cost is greater than average total cost then average variable cost is increasing andaverage variable cost is decreasing.
【单选题】张女士,32岁,因畏寒、发热、厌油、恶心呕吐、食欲缺乏、乏力就诊,诊断为甲型肝炎,收入院治疗,病人采取的隔离措施哪项不妥
【单选题】设系统的单位抽样响应为h(n),则系统因果的充要条件为
【单选题】If both the marginal cost and the average variable cost curves are U-shaped, which of the following is true over the range of output for which the average variable cost curve has a negative slope?
A.
The marginal cost curve must have a negative slope.
B.
The average total cost curve must have a negative slope.
C.
The marginal cost curve is below the average variable cost curve.
D.
both (b) and (c) are correct.
【单选题】Which of the following is true if marginal cost is above average variable cost as output rises?
A.
Average total cost must be falling
B.
Average fixed cost must be rising.
C.
Average variable cost must be falling.
D.
Average variable cost must be rising.
【判断题】消费品市场的商品各类繁多,消费者在购买商品时对所有的商品都十分了解。
【单选题】( )颁布的失业社会保险立法,标志着世界上强制性失业社会保险制度的诞生
【判断题】拜访客户的过程中感到与客户非常'投缘”,虽然很想继续聊下去,但是为了不过度打扰客户,还是应当按照事先约定的时间起身告辞。()