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【简答题】
举例说明材料的主要类别。
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举一反三
【单选题】This dialogue is mainly about ______.
A.
Andrew’s toothache
B.
teeth made of plastics
C.
tooth transplanting
D.
the Georgetown University Hospital
【简答题】依我国现行法律法规规定，反倾销税、反补贴税的征收机关是商务部。( )
【简答题】readonly
【单选题】Some hard plastics can be______ metals in manufacturing machine parts.
A.
substituted for
B.
taken the place of
C.
replaced in
D.
given way to
【单选题】Plastics can`t______steel completely
A.
instead
B.
instead of
C.
take the place of
D.
take place
【简答题】Question 3 A plastics monopolist faces the demand curve P=180 - Q, where Q is measured in thousands of pounds per year and P is measured in dollars per pound. Marginal cost is constant at MC=＄60 per p...
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