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【单选题】
下列关于操作系统的叙述中，正确的是( )。A.
操作系统是可有可无的
B.
应用软件是操作系统的基础
C.
操作系统只能控制软件
D.
操作系统是一种系统软件
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举一反三
【多选题】Factor endowments refer to a country’s endowments with resources such as __________.
A.
land
B.
labor
C.
location
D.
capital
【多选题】Factor endowments refer to a country’s endowments with resources such as _________________.
A.
location
B.
land
C.
labor
D.
capital
【单选题】The _____ theory argues that the pattern of international trade is determined by differences in factor endowments.
A.
comparative advantage
B.
Leontief Paradox
C.
Heckscher-Ohlin
D.
absolute advantage
【简答题】淀粉形成均匀糊状溶液的现象称为（）；而淀粉凝胶经长期放置会变成不透明的沉淀现象则称为（）。
【单选题】Factor endowments refer to the extent to which a country:
A.
supports education, research, and development.
B.
develops the infrastructure to support industrialism.
C.
supports free trade.
D.
is endowed with such resources as land, labor, and capital.
【简答题】淀粉在适当温度下吸水膨胀形成均匀糊状溶液的现象称为____________。淀粉溶液经过缓慢冷却或淀粉凝胶长期放置,会变为不透明甚至产生沉淀,这种现象称为____________。
【简答题】What's factor intensity? What's factor endowments?
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