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若实数满足,则的最大值是( )
A.1 B. C. D.2
A.0 B. C.1 D.2
若实数满足,则的最大值是( )
设动点满足,则的最小值是( )
若复数满足,则的最小值是( )
A.1 B.2 C. D.