A.0.2m B.0.5m C.0.8m D.1m
A.受噪聲影響方向的窗戶開啟 B.受噪聲影響方向的窗戶關(guān)閉 C.未受噪聲影響方向的窗戶開啟 D.未受噪聲影響方向的窗戶關(guān)閉
A.0.8m,1m B.1.2m,1m C.1m,1.2m D.1.5m,1.3m