等于( B ) A. 1 B. C. 0 D. 查看更多

 

题目列表(包括答案和解析)

等于

A.0                              B.-1                           C.1                              D.不存在

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等于      

A.-1                           B.0                              C.1                              D.2

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等于

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

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等于(    )

A.0                    B.1                   C.2                    D.3

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()等于

A.-1               B.0                    C.1                    D.2

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