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【多选题】
听觉的行波理论认为：
A.
近蜗顶的基底膜的横纤维较短
B.
音频越高，基底膜最大振幅部位越接近蜗顶
C.
基底膜产生的最大振幅部位取决于音频的高低
D.
音频越低，基底膜最大振幅部位越接近蜗顶
参考答案：
参考解析：
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举一反三
【单选题】Every year television stations receive hundreds of complaints about the loudness of advertisements. However, federal rules forbid the practice of making ads louder than the programming. In addition, t...
A.
TV stations always operate at the highest sound levels
B.
their sound levels are kept around peak levels
C.
their sound levels are kept in the middle frequency ranges
D.
unlike regular programs their intensity of sound varies over a wide range