In water, precipitation raises noise about 30 dB, ranges between

1.	In water, precipitation raises noise about 30 dB, ranges between
A.	800 and 20,000 Hz.
B.	100 and 20,000 Hz.
C.	100 and 900,000 Hz.
D.	900 and 900,000 Hz.
Answer» C. 100 and 900,000 Hz.

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