【判断题】钒酸盐的溶液与过氧化氢反应,在酸性条件下产物为红棕色,在碱性条件下产物为黄色。
【简答题】DFT中旋转因子的固有性质有 _______ 。 N=2 M 点DIF-FFT共有 M 级运算,每级共有 ____ 个蝶形运算 利用 线性调频z变换 可以实现窄带信号频率分辨率的快速分析,对于系统辨识问题,当系统频率响应的极点远离单位圆时,用CZT可以准确的快速测定 ____ 。
【单选题】听力原文:W: Good morning, Mr. Tim. It's a long time since I had the pleasure of a visit from you. M: Yes, it must be three or four years. I haven't visited you since I called about my will. You helped me ...
【单选题】成人游戏与儿童游戏的区别,下列选项中不正确的是 。
【单选题】听力原文:W: Good morning, Mr. Tim. It's a long time since I had the pleasure of a visit from you. M: Yes, it must be three or four years. I haven't visited you since I called about my will. You helped me ...
【单选题】下列选项中,对游戏的基本特征描述错误的是()