【简答题】垄断厂商的总收益函数为TR=120Q- ,总成本函数为TC=10+8Q。试求: (1) 厂商利润最大化的产量和价格? (2) 若政府征收10%的从价销售税,那么厂商的均衡产量和市场价格为多少?
【单选题】关于因果稳定离散时间LTI系统,以下说法错误的是_____。
A.
其系统函数的收敛域可能是有限 z 平面内的环状区域
D.
其单位脉冲响应的双边 z 变换与单边 z 变换的结果相同
【简答题】死腔样通气(dead space like ventilation)
【简答题】The United States is full of 1 . There are still many families without cars, but some families have two or even more. However, cars are used for more than pleasure. They are 2 part of life. Cars are u...
【判断题】孕妇要吃清洗干净的、煮熟、煮透的食品()