根据《建筑施工场界噪声限值》(GB12523-2011),推土机在夜间施工时的施工噪声最大声极限值是()dBA.65 B.70 C.75 D.85

作者: tihaiku 人气: - 评论: 0
问题 根据《建筑施工场界噪声限值》(GB12523-2011),推土机在夜间施工时的施工噪声最大声极限值是()dB
选项 A.65 B.70 C.75 D.85
答案 B
解析 教材P220页 夜间噪声最大声级超过限值的幅度不得高于15dB,表2Z105042-2表中夜间建筑施工场界噪声限值表为55dB.所以15+55=70dB

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