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已知集合,则集合{x|x≥1}为( ) A.M∩N B.M∪N C.CR(M∩N...
已知集合
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,则集合{x|x≥1}为( )
A.M∩N
B.M∪N
C.C
R(M∩N)
D.C
R(M∪N)
考点分析:
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