問題詳情
31. 一般理想的噪音防護具在戴用後，至多應可容許暴露多少分貝的音量？
(A) 50 dB以下
(B) 50 ~ 70 dB之間
(C) 70 ~ 85 dB之間
(D) 90 ~ 100 dB之間
(A) 50 dB以下
(B) 50 ~ 70 dB之間
(C) 70 ~ 85 dB之間
(D) 90 ~ 100 dB之間
參考答案
無參考答案
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