(1)的值. 查看更多

 

題目列表(包括答案和解析)

的值是                                                          (     )

A.-2        B.2        C.        D.-

 

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的值等于(    )                                                                                                                                          A.7          B. -7            C. ±7           D.

 

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的值是                                        (    )
A.9B.-9 C.9D. 3

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的值等于(   )                                                                                                   
A.7B.-7C.±7D.

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的值是·························· ( ▲ )
A.±4B.4 C.±2D.2

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