gc textbook chapter 12 Sound (id: 3cbc98a67)

本题目来源于试卷: gc textbook chapter 12 Sound，类别为 IB物理学

[填空题]
What is the resultant sound level w;xwiq7 q ,o ed+bfk p-vv5ckaj 8a(z0,hen an 82-d(z:; gy1mt eq;wi upex a7dy2:B sound and an 87-dB sound are heard simul ;iu:gy1xz:a;2emy p etq7w(d taneously?    dB

参考答案: 88±2%


本题详细解析:

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