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【单选题】
关系运算中花费时间最长的运算是()。
A.
投影
B.
广义笛卡儿积
C.
除法
D.
选取
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【判断题】Price is not the only factor to be considered when shopping on the ship.
A.
正确
B.
错误
【单选题】Insurance against risks at an acceptable price can only be realized when the amount of people facing the similar risk is quite large.
A.
Y
B.
N
C.
NG
【单选题】“Other things equal, when the price of a good rises, the quantity supplied of the good also rises, and when the price falls, the quantity supplied falls as well.” This relationship between price and ...
A.
is referred to as the law of supply.
B.
applies only to a few goods in the economy.
C.
is represented by a downward-sloping supply curve.
D.
All of the above are correct.
【单选题】_____ occurs when the only two firms in an industry agree to fix the price at a given level.
A.
Collusion
B.
The ability to satisfy demand
C.
Price extortion
D.
Price leadership
【单选题】When the price of only one good rises, the relative price of that good
A.
falls.
B.
rises.
C.
does not change.
D.
rises if it is a normal good and falls if it is an inferior good.
【单选题】Figure 4-1 Refer to Figure 4-2. If Consumer A and Consumer B are the only consumers in the market, then the market quantity demanded when the price is $10 is
A.
0 units.
B.
4 units.
C.
10 units.
D.
12 units.
【单选题】_____ occurs when the only two firms in an industry openly agree to fix the price at a given level.
A.
Overt collusion
B.
Price leadership
C.
Contestability
D.
Tacit collusion
【单选题】个园原为清代画家石涛故居寿芝园旧址。园中的( )在扬州古代园林中别具特色,在国内也属罕见。
A.
四季假山
B.
水景
C.
山水景色
D.
城市山林
【单选题】When a tax is imposed on a good or service, buyers respond only to the price that ________ the tax, and sellers respond to the price that ________ the tax.
A.
excludes; includes
B.
includes; excludes
C.
excludes; excludes
D.
includes; includes
【单选题】The following statements have been made about the demand for products.(1)Demand for a product will increase when the price of a substitute product falls.(2)Demand for a product will fall when the pric...
A.
1 only
B.
2 only
C.
Neither 1 nor 5
D.
Both 1 and 2
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