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【共同学*】【土建版20160224】

2016-02-24View Original

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この投稿は最後にhesonchang214によって2016-3-3 08:40に編集されました。参加報酬:2財富。正解の報酬:9富。 杭打ち工事における日中の工事現場の騒音限度値は( )dBです。  A、55  B、70  C、80  D、85 正解:B、70
Reply #22016-02-24
B 建築工事現場の騒音限度値:昼間70dB(A)、夜間55dB(A)。
Reply #32016-02-24
D、85~~~~~~~~~~~~~~

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