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【单选题】
某声源的衰减符合点声源衰减规律，在距离其50m处的声压级为26dB(A)，在距离25m处的声压级为( )。A.
52dB(A)
B.
50dB(A)
C.
32dB(A)
D.
30dB(A)
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