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【判断题】
( )磁感线是互不相交的闭合曲线,在磁铁外部,磁感线从N极到S极;在磁铁内部,磁感线的从N极到S极。A.
正确
B.
错误
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【单选题】The figure given below shows the market for MP3 p layers in a small country . D d and S d are the domestic demand and domestic supply curves of the MP3 players before the imposition of the quota. ( S ...
A.
B.
C.
D.
D
【简答题】Directions: Complete the following sentence with a proper word from your textbook on P.58. Change the form if necessary. The government has pledged to reduce the amount of (n.) used in food production...
【单选题】A monopoly has the demand curve q = 10000-100p. Its total cost function is c(q) = 1000+10q. The government plans to tax the monopoly's profits at a rate of 50%. If it does so:
A.
the monopoly will increase its price by 50%.
B.
the monopoly will increase its price by more than 50%.
C.
the monopoly will recover some, but not all of the tax it pays by increasing its price
D.
the monopoly will not change its price or the quantity it sells
【单选题】The demand function for orange juice is q = 269-9p and the supply function is q = 9+4p; where q is the number of units sold per year and p is the price per unit, expressed in dollars. The government d...
A.
52
B.
56
C.
25
D.
61
【简答题】Read a short passage and listen to a talk on the same topic. Reading Time: 45 seconds Health Insurance All students may purchase health insurance at the time of registration by marking the insurance b...
【简答题】选词填空 World Health Organization wild lives f ever clinic p harmacy d aily necessities 1. If you have fatigue ( 乏力 ), dry cough ( 干咳 ) and fever, you should go to the as soon as possible to seek profess...
【简答题】a short account of written materials or data He was so busy that he only read a concise d of their project.
【单选题】He must have read that short novel written by Mark Twain, _______?
A.
mustn’t he
B.
didn’t he
C.
hasn’t he
D.
shouldn’t he
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