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【单选题】
在全部经济活动所创造的产值当中，20世纪70年代主要发达国家的服务业产值贡献达到或超过全部产值的一半左右，到世纪之交的时候，已经占到将近三分之二的比重。这段话表明在发达国家（ ）。A.
经济活动的大部分内容是在提供服务
B.
服务业是国民经济的基础
C.
服务业有可能成为人类经济活动的全部
D.
工农业产值均在下降
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【单选题】A philosophy of culture begins with the assumption that the world of human culture is not a mere aggregate of loose and detached facts. It seeks to understand these facts as a system, as an organic wh...
A.
is not at all to aggregate a mass of facts
B.
seeks to understand the various facts as a whole
C.
assumes the discrete facts as a systematic whole
D.
claims history as a collection of the data of human culture
【简答题】西装领中影响倒伏量的因素有那四个
【简答题】Against the assumption that forest fires in Alaska, Canada and Siberia warm the climate, scientists have discovered that cooling may occur in areas where burnt trees allow more snow to mirror more sun...
【单选题】The assumption that the magnitude of the slope of an indifference curve decreases moving to the right along the indifference curve is known as the assumption of
A.
the price effect.
B.
a diminishing marginal rate of substitution.
C.
an increasing marginal rate of substitution.
D.
an indifference curve effect.
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