e6503375_009__Tanpa_Klasifikasi_Lugansk__3
[0] 93. [1] Student Н. is estimating the noise rate in the punching workshop. What device is he using? [2] *Phonovibrometer [4] Audiotester. [5] Actinometer [6] Piranometer. [3] 
Analysator of noise spectrum
Krok 2009: Tanpa Klasifikasi Lugansk
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