13.满足M {a1, a2, a3, a4}.且M∩{a1 ,a2, a3}={ a1.a2}的集合M的个数是 查看更多

 

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满足Ma1, a2, a3, a4},且M∩{a1 ,a2, a3}={ a1a2}的集合M的个数是

(A)1       (B)2            (C)3                (D)4

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满足M{a1, a2, a3, a4},且M∩{a1 ,a2, a3}={ a1,a2}的集合M的个数是(    )

A.1       B.2            C.3                D.4

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满足M{a1, a2, a3, a4},且M∩{a1 ,a2, a3}={ a1,a2}的集合M的个数是                       (    )

A.1                 B.2                   C.3                        D.4

 

 

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满足M{a1, a2, a3, a4},且M∩{a1 ,a2, a3}="{" a1,a2}的集合M的个数是(   )
A.1B.2C.3D.4

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满足Ma1, a2, a3, a4},且M∩{a1 ,a2, a3}={ a1a2}的集合M的个数是                     (    )

                                 A.1         B.2                C.3             D.4

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