33.若復數(shù)是純虛數(shù).則實數(shù)a的值為 查看更多

 

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若復數(shù)是純虛數(shù),則實數(shù)a的值為    (  )

A.1                 B.2              C.1或2          D.-1

 

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若復數(shù)是純虛數(shù),則實數(shù)a的值為   (    )

    A.-2             B.4              C.-6             D.6

 

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若復數(shù)是純虛數(shù),則實數(shù)a的值為     (    )

       A.-3                       B.3                        C.-6                       D.6

 

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若復數(shù)是純虛數(shù),則實數(shù)a的值為                     (  )

A.1                              B.2                        C.1或2                 D.-1

 

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若復數(shù)是純虛數(shù),則實數(shù)a的值為       .

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