A.日常性能校验 B.季度性能检查 C.一般性能检查 D.特殊性能检查
A.C B.T C.W D.S
A.将磁悬液搅拌均匀后,用锥形长颈沉淀管接取从喷嘴喷出的磁悬液100ml静置沉淀 B.水基磁悬液静置30min-35min C.水基磁悬液体积浓度为0.2ml/100ml-0.6ml/100ml D.体积浓度不符时不用重新调配
A.320mm~400mm,365mm B.300nm~400nm,345nm C.320nm~400nm,365nm D.300mm~400mm,345mm
A.8~12dB B.12~15dB C.15~18dB D.18~21dB