問題詳情
3.( ) 下列哪個二次函數的圖形與 x 軸恰有一個交點？
(A) 
(B) 
(C) 
(D)
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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