题目内容
声级计A声级的设计是根据
2021-10-27
A.模拟人耳对40方的等响曲线
B.模拟人耳对70方的等响曲线
C.模拟人耳对100方的等响曲线
D.模拟人耳对1000Hz标准音等响曲线
E.模拟人耳对40dB纯音的响应曲线
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