单项选择题
A.160m3/h,160m3/h,160m3/h B.130m3/h,130m3/h,130m3/h C.160m3/h,130m3/h,130m3/h D.160m3/h,160m3/h1,30m3/h
A.20000 B.21000 C.40000 D.25000
A.缓蚀剂、混凝剂 B.杀菌剂、絮凝剂 C.缓蚀剂、阻垢剂 D.混凝剂、絮凝剂