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【单选题】
点火线圈的初级线圈和次级线圈的电阻( )A.
应一样大
B.
前者大于后者
C.
前者小于后者
D.
大小不确定
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举一反三
【判断题】If the demand and supply curves are described by the following equations P=a-bQ and P=c+dQ , respectively, the equilibrium quantity is Q*=(a-c)/(b+d) .
A.
正确
B.
错误
【简答题】In some markets, demand can be approximated by Q = 50 - 5P + 10Y where Q is quantity, P price per unit, and Y buyers = income. Supply can be approximated by Q = -5 + 10P. a. If Y = 20, what is equil...
【简答题】Suppose demand can be described with the equation Q = 900 - 5P and supply with the equation Q = 100 + 5P. a. Determine the equilibrium price and quantity. b. Determine the surplus or shortage if t...
【单选题】Assume that A represents demand for cars and B represents supply of cars. If A: P = 10,000 - 2Q and B: P = 6000 + 2Q, the equilibrium price and quantity are:
A.
P = 1000, Q = 8000
B.
P = 800, Q = 100
C.
P = 8000, Q = 1000
D.
P = 100, Q = 800
【简答题】我国的第一部马克思主义教育学著作是( )。 (A)商务印书馆编的《教育学》 (B)杨贤江的《新教育大纲》 (C)凯洛夫的《教育学》 (D)钱亦石的《现代教育原理》
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