單項選擇題
A.5-7B.4-7C.4-6D.>8
A.40~60B.50~70C.60~80D.70~90
A.0.1~0.8VB.0.2~06VC.03~0.9VD.0.3~1V
A.≤7B.≥7C.≤10D.≥10
A.690×890B.660×860C.660×760D.690×790
A.100B.110C.120D.130
A.鹽酸B.雙氧水C.硅氟酸D.生石灰
A.3種B.4種C.5種
A.2B.3C.4D.5
A.se≤0.06mg/lB.se≤60mg/lC.se≤0.06g/lD.se≤60g/l
A.打入廢水槽排至爐前廢水槽B.倒入雨排或者下水道C.打入中間槽過濾后用做電解液