A.
需求交叉弹性系数Eij>0,两种商品之间存在替代关系
B.
需求交叉弹性系数Eij<0,两种商品之间存在互补关系< /div>
C.
需求交叉弹性系数Eij=0,两种商品之间不存在相关关系
D.
需求交叉弹性系数Eij>0,两种商品之间存在互补关系
E.
需求交叉弹性系数Eij<0,两种商品之间存在替代关系< /div>
【单选题】下列关于需求交叉弹性Exy的说法,正确的有( )。 Ⅰ 需求交叉弹性是指某种商品或者劳务需求量的相对变动对于另一种商品价格变动反应的敏感性程度 Ⅱ 相关商品价格变化量的变化是决定商品需求量的一个重要因素 Ⅲ 若Exy>0,说明X与Y两种商品间存在替代关系 Ⅳ 若Exy=0,说明X与Y两种商品间无关系
【多选题】下列关于需求交叉弹性的表述正确的有()
A.
需求交叉弹性系数是一种商品的需求量的变动率与该种商品价格变动率的比值
B.
需求交叉弹性系数为正直,表示两种商品之间为替代关系
C.
需求交叉弹性系数为负值,表示两种商品之间为互补关系
D.
需求交叉弹性系数为零,表示两种商品之间无相关关系
【单选题】What reason does the author give for Washington' s not going to college?
A.
The author doesn't tell.
B.
He didn't like the young gentlemen who went to college.
C.
His family could not afford it.
D.
A college education was rather uncommon in his times.
【单选题】According to the article, primary buying motives are the customer ’ s ___. A. first and basic reason for buying what he wants to B. reasons for his choice of a certain merchandise C. first decision as...
A.
first and basic reason for buying what he wants to
B.
reasons for his choice of a certain merchandise
C.
first decision as to what to buy
D.
plan before buying something
【多选题】关于需求交叉弹性,正确的有
A.
如果需求交叉弹性是负值,说明这两种商品是替代品
C.
如果需求交叉弹性是正值,说明这两种商品是互补品
D.
如果需求交叉弹性是负值,说明这两种商品是互补品