天然气净化操作工题

对于生产过程和设备产生的噪声,应首先从( )进行控制,使噪声作业劳动者接触噪声声级符合GBZ2.2-2007的要求。

发布于 2021-02-18 12:53:06

【单选题】
A 声源上
B 隔声措施上
C 减振措施上
D 消声措施上

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苦短 2023-02-18

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