A.2 B. C.4 D. 查看更多

 

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A. 2                  B.              C.4              D.0

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=
[     ]
A.0
B.
C.2
D.4

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tan15°+cot15°等于                                                                                             

A.2                            B.                  C.4                            D.

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=                                                          

    A.0    B.   C.2  D.4  ;

 

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A.0        B.           C.2          D.4

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