A.120~200mg/L B.500mg/L以上 C.600~1200mg/L D.300~500mg/L
A.稀釋劑和降濾失劑B.有機(jī)絮凝劑C.分散劑D.增稠劑
A.6.5~8 B.8~10 C.11~12 D.12~14