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【简答题】
旋转反伸操作是由两个操作复合而成的，这两个操作可以都是对称操作，也可以对称操作，请举例说。
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举一反三
【单选题】If a 15% increase in price for a good results in a 20% decrease in quantity demanded, the price elasticity of demand is
A.
0.75
B.
1.25
C.
1.33
D.
1.60
【单选题】If the First National Bank has a gap equal to a negative $30 million, then a 5 percentage point increase in interest rates will cause profits to
A.
increase by $15 million.
B.
increase by $1.5 million.
C.
decline by $15 million.
D.
decline by $1.5 million.
【简答题】表示在元素最前面添加内容的伪元素选择器是
【单选题】P3.下列关于货币数据类型的叙述中,错误的是()。
A.
货币型字段在数据表中占8个字节的存储空间
B.
货币型字段可以与数字型数据混合计算,结果为货币型
C.
向货币型字段输入数据时,系统自动将其设置为4位小数
D.
向货币型字段输入数据时,不必输入人民币符号和千位分隔符
【单选题】If the price elasticity of supply is 0.2, and a price increase led to a 3% increase in quantity supplied, then the price increase is about
A.
0.07%.
B.
0.60%.
C.
6%.
D.
15%.
【单选题】If a 15 percent increase in price causes a 30 percent decrease in quantity demanded ,this product might
A.
have no close substitute
B.
be a luxury
C.
be a necessity
D.
be in a short time horizon
【单选题】If a 15 percent increase in price causes a 30 percent decrease in quantity demanded ,this product might
A.
have no close substitute
B.
be a luxury
C.
be part of a broadly defined market
D.
be in a short time horizon
【单选题】If a 20 percent decrease in the price of a good leads to a 15 percent increase in the quantity demanded, then demand is ________ and total revenue will ________ as a result of the fall in price.
A.
elastic; increase
B.
elastic; decrease
C.
inelastic; increase
D.
inelastic; decrease
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