【单选题】出乎意料的紧张情景所引起的情绪状态被称为()
【单选题】“情急性智”描述的是下列哪一种情绪状态?( )
【单选题】Distinctive characteristics of service operations include which of the following?
A.
customer participation and perishability
B.
intangibility and heterogeneity
【多选题】List five important differences between goods production and service operations.
A.
The nature and consumption of output.
C.
Labor content of jobs.
E.
Measurement of productivity.
【简答题】计算分析题:设消费函数C=100+0.75Y,投资函数I=20-2r,货币需求函数L=0.2Y-0.5r,货币供给M=50。价格水平为P。求:(1)总需求函数;(2)当价格为10和5时的总需求;(3)政府购买增加50时的总需求曲线并计算价格为10和5时的总需求;(4)货币供给增加20时的总需求函数。