【判断题】2009- 2011年是中国电子商务竞争与高速增长阶段。( )
【单选题】力法求解超静定结构时未知量的数目等于()
【判断题】"Other things equal, an increase in supply causes a decrease in price" is a normative statement, not a positive statement.
【判断题】心交感神经兴奋时可引起心率加快,心肌收缩力减弱。( )
【单选题】"Other things equal, when the price of a good rises, the quantity demanded of the good falls, and when the price falls, the quantity demanded rises." This relationship between price and quantity deman...
C.
the relationship between demand and income.
D.
the definition of a normal good.