Daily Question 2015.9.22 (EIA Discussion): 3 Wealth points for replies, plus 5 Wealth points for correct answers (single-choice question)
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This post was last edited by Zhang Xiaopeng on 2015-9-22 at 15:59. The equivalent sound level measured at a certain sensitive location during the first 8 hours of the day was 55.0 dB(A), while it was 65.0 dB(A) during the subsequent 8 hours; therefore, the equivalent sound level during the day at that sensitive location is (). A. 60 dB(A) B. 62.4 dB(A) C. 65 dB(A) D. 65.4 dB(A) Correct answer: B. Explanation: The method for calculating equivalent sound level is 10lg **. The Noise Pollution Control Law classifies noise pollution into day and night periods; day time ranges from 6:00 to 22:00, while the rest of the time is considered night time
The equivalent sound level measured during the first 8 hours of the day at a certain sensitive location was 55.0 dB(A), while it was 65.0 dB(A) during the subsequent 8 hours; the equivalent sound level for that location during the day is (B). A.60dB(A) B.62.4dB(A) C.65dB(A) D.65.4dB(A)
C----------------------------------
The equivalent sound level measured during the first 8 hours of the day at a certain sensitive location was 55.0 dB(A), while it was 65.0 dB(A) during the subsequent 8 hours; the equivalent sound level for that location during the day is (B). A. 60dB(A) B. 62.4dB(A) C. 65dB(A) D. 65.4dB(A)
The equivalent sound level measured during the first 8 hours of the day at a certain sensitive location was 55.0 dB(A), while it was 65.0 dB(A) during the subsequent 8 hours; the equivalent sound level for that location during the day is (B).
The equivalent sound level measured during the first 8 hours of the day at a certain sensitive location was 55.0 dB(A), while it was 65.0 dB(A) during the subsequent 8 hours. The equivalent sound level during the day at that sensitive location is (). A.60dB(A)
The equivalent sound level measured at a certain sensitive location during the first 8 hours of the day was 55.0 dB(A), while it was 65.0 dB(A) during the subsequent 8 hours. The equivalent sound level for that location during the day is (B. 62.4 dB(A)).
The equivalent sound level measured during the first 8 hours of the day at a certain sensitive location was 55.0 dB(A), while it was 65.0 dB(A) during the subsequent 8 hours; the equivalent sound level for that location during the day is (D). A.60dB(A) B.62.4dB(A) C.65dB(A) D.65.4dB(A)
B.62.4dB(A)
Choose C; you know what equivalent sound level actually is