A.日常性能校驗(yàn) B.季度性能檢查 C.一般性能檢查 D.特殊性能檢查
A.C B.T C.W D.S
A.將磁懸液攪拌均勻后,用錐形長頸沉淀管接取從噴嘴噴出的磁懸液100ml靜置沉淀 B.水基磁懸液靜置30min-35min C.水基磁懸液體積濃度為0.2ml/100ml-0.6ml/100ml D.體積濃度不符時(shí)不用重新調(diào)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