单项选择题X 纠错
A.BUC B.BDC C.U/C D.D/C
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单项选择题
A.9.7DB/K B.19.7DB/K C.29.7DB/K D.39.7DB/K
A.8.448MBPS B.2.048MBPS C.1.024MBPS D.15MBPS
A.64kB/s~2048kB/s B.64kBit/s~44.736MB/s C.64kBit/s~8.448MB/s D.64kBit/s~32.368MB/s
A.5% B.10% C.15% D.20%
A.47 B.50 C.97 D.53
A.46.8DB/K B.19.0DB/K C.56.8DB/K D.72.6DB/K
A.40 B.60 C.80 D.100
A.30 B.33 C.21 D.38
A.30% B.40% C.50% D.60%
A.2LgN B.10LgN C.LgN D.10㏑N
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