A.0.5 B.0.7 C.1 D.1.2
A.局方 B.商務(wù)經(jīng)理 C.項(xiàng)目經(jīng)理 D.工程設(shè)計(jì)經(jīng)理
A.10dB B.11dB C.12dB D.13dB