Is 85 Db Loud Enough

Is 85 Db Loud Enough 45 85 43 95 2cm 53 5cm 109 2cm 50 110 7cm 62 3cm 127cm

FTP FTP 2011 1

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85 85 85 85 95 85 95 95 240 115 53

A 95 100 A 90 94 5 B 85 89 5 B 80 84 5 C 75 79 5 C 70 74 5 D 60 69 5 E 0 59 5 a b c d a b c d 1984 1993 17 3 11 3Kpa 130 85mmHg 17 3 18 6Kpa 130 139mmHg

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2011 1 8 56cm 5 4cm 0 1cm 85 6mm 54mm 1mm

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