1.2 设函数f(x)连续,且 '(0)gt 0, 则存在 gt 0, 使得 ()-|||-(A)f(x)在(0,δ)内单调增加-|||-(B)f(x)在 (-8,0) 内单调增加-|||-(C)对任意的 in (0,8) 有 (x)gt f(0)-|||-(D)对任意的 in (-8,0) 有 (x)gt f(0)