【多选题】【消耗次数：1】
劳动力需求( )。
①
是一种派生需求
②
是有效需求
③
是雇主对劳动力所有权的购买
④
取决于生产要素的替代能力
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相关题目
【单选题】
在其他条件不变时，下列关于劳动力需求正确的说法是（）
①
劳动力需求随工资率提高而减少
②
劳动力需求随工资率提高而增加
③
无论工资率如何变化，劳动力需求始终减少
④
无论工资率如何变化，劳动力需求始终增加
随机题目
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①
make all out
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make out all
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go all out
④
go out all
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In June 1941 Hitler suddenly ______ an attack on Russia.
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launched
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exerted
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developed
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created
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for
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to
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We shall ______ all our friends and allies in every part of the world to take the same course and pursue it.
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appeal to
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appeal with
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about
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buy out
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put down
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put up
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put off
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put out
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①
with
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about
③
/
④
of
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①
took a chance
②
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③
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