Why is noise difficult to measure?
B
Tại sao âm thanh khó đo lường?
Nó gây mất thính giác
B. Tất cả mọi người không phản hồi giống nhau trong cùng một cách.
C. Nó không được mong muốn.
D. Người ta trở nên quen dần với nó.
Dẫn chứng: it is very difficult to measure because the discomfort experienced by different individuals is highly subjective and, therefore, variable.
=> Chọn B
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