1.集合P={x|x2=1}.Q={x|mx=1}.若QP.则m等于 ( ) A.1 B.-1 C.1或-1 D.0,1或-1 查看更多

 

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集合P={x|x2=1},Q={x|mx=1},若QP,则m等于                            (    )

    A.1              B.-1             C.1或-1          D.0,1或-1

 

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集合P={x|x2=1},Q={x|mx=1},若QP,则m等于(   )

    A.1             B.-1           C.1或-1        D.0,1或-1

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集合P={x|x2=1},Q={x|mx=1},若QP,则m等于                                             (    )

       A.1                    B.-1                     C.1或-1               D.0,1或-1

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集合P={x|x2=1},Q={x|mx=1},若QP,则m等于                   (   )

A.1B.-1C.1或-1D.0,1或-1

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集合P={x|x2=1},Q={x|mx=1},若QP,则m等于                   (   )
A.1B.-1C.1或-1D.0,1或-1

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