2011年注册环保工程师专业考试专业案例噪声下午

201176f0Af0VVBf0VVCf01/VVDf01/tt77220Hz1.5kg/m32.5kg/m3A5cmB5cmC10cmD10cm7850m*40m*3m**A50mmB50mmC50mm50mmD50mm50mm791.5m1.5m10KV/m1.5m4Taobao:ywlhp021030KV/mHL182022mAH=18mL=34.5mBH=20mL=33.5mCH=22mL=32.5mDH=24mL=31.5m80ABCD81100mm400mm0.038m3340m/sA11dBB13dBTaobao:ywlhp021030C16dBD19dB8218dBA0.5mmB1.0mmC2.0mmD3.0mm83150mmNR-80Hz25050010002000dB90939496NR-80dB86838078()0.40.81.11.2A516mmB375mmC477mmD563mm842000m20.081m0.88dBA96B55C140D1758530m*25m*8m**88dB0.083m10mTaobao:ywlhp021030A74dB71dBB71dB71dBC74dB68dBD65dB65dB8650m*40m*15m**5.0s63dB60dBA978m2B1204m2C1563m2D1956m28710m*6m*3.5m**8m2500Hz0.8s0Hz631252505001000200040000.20.020.180.180.100.070.040.20.250.300.400.600.700.07A70m2B103m2C107m2D138m28840000m31000Hz2.77s3005m21000Hz0.81000HzA1.76sTaobao:ywlhp021030B1.84sC2.21sD2.29s89300mm400mm19dB112dBA93.0dBB79.0dBC81.5dBD100.5dB901.2420Pa5m/s1.29Kg/m3A16.5PaB40.4PaC20.0PaD24.0Pa9130dBA107dBA17m/s80dBAA30dBAB27dBAC20dBAD24dBA92100mm400mm63Hz15dBc=340m/sA0.11mTaobao:ywlhp021030B0.21mC0.31mD0.41m931.5m2.86mc=340m/sA63HzB125HzC250HzD500Hz9450m*40m*15m**0.050.151506.8m220mA2.7dBB3.2dBC3.8dBD4.2dB9550m30m50000m20.10.316dBA22.2dBB9.4dBC13.2dBD18.8dB962mm100mm10m63Hz17dB5mm340m/sTaobao:ywlhp021030A7B17C28D55971000Hz95dB36.2m20.536dB0.13m20.934dB13.7m20.0935.3dB12.5m20.02A36dBB31dBC64dBD59dB98100mm0.027m2125Hz1/3340m/sA18dBB15dBC10dBD25dB992.5kg/m240mm*40mm0.8kg500mm*500mm3mmA80Hz~120HzB100Hz~150HzC120Hz~180HzTaobao:ywlhp021030Taobao:ywlhp021030D140Hz~220Hz1006000m20.28m68dB800m2A65dBB65dBC65dB68dBD68dB