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【单选题】
已知|2x-3|≤2的与{x|x 2 +ax+b≤0}的相同，则（ ）A.
a=3，b=- 5 4
B.
a=-3，b= 5 4
C.
a=3，b= 5 4
D.
a+b= 17 4
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举一反三
【单选题】Which is correct with respect to the absolute PPP theory?
A.
It postulates that the exchange rate between two currencies is equal to the ratio of the price levels in the two nations
B.
it does not take into consideration transportation costs or other obstructions to the flow of international trade
C.
can be very misleading
D.
all of the above
【单选题】Absolute PPP holds for a product bundle if:
A.
the law of diminishing returns holds for all the goods in the bundle.
B.
the goods are traded with minimum transportation costs.
C.
there exists free trade in all the commodities.
D.
the law of one price holds for each of the goods in the bundle.
【单选题】Which of the following are reasons by the absolute PPP would not hold? I. Consumer preferences II. Transaction costs III. Local taxes IV. Company discounts
A.
II only
B.
IV only
C.
I, II, and IV
D.
I, II, and III
【判断题】The assumptions for relative PPP are more rigid than the assumptions for absolute PPP.
A.
正确
B.
错误
【单选题】Absolute PPP can be seen as an extension of ________ by generalizing the price of a good to the countrywide level.
A.
Relative PPP
B.
Law of one price
C.
Exchange rate equilibrium
D.
Equilibrium currency
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