A. 使输出电压翻转的输入电压 B. 使输出电压达到最大幅值的基准电压 C. 输出达到的最大幅值电压 D. 输出达到最大幅值电压时的输入电压
A. Using a medium graphite grease as a lubricant B. Operating a winch too slow C. Using a sheave with an undersized throat D. A sheave diameter of 24 times the wire's diameter
A. 楔形 B. 旗形 C. 喇叭形 D. 矩形