第24题: [单项选择]依据 (6) ,声卡可以分为8位、16位、32位等。 A. 接口总线 B. 采样频率 C. 量化位数 D. 量化误差 参考答案:C 答案解析:[要点解析] 声音信号是一种模拟信号,计算机要对它进行处理,必须将它转换成为数字声音信号,即用二进制数的编码形式来表示声音。 最基本的声音信号数字化方法是采样一量化方法。采样是把时间连续的模
第26题: [填空题] You will hear five people talking about e-business in different areas.
For each extract there are two tasks. For Task One. choose the areas from the list A—H. For Task Two, choose the benefits from the list A-H.
You will hear the recording twice.
参考答案:D