计算:(-2x3)2= .
考点分析:
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A.(1.5,1.5)
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不等式组
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的解集在数轴上表示为( )
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B.
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C.
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D.
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图1是一个底面为正方形的直棱柱金属块,因设计需要将它切去一角,如图2所示,则切去后金属块的俯视图是( )
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A.
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B.
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D.
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