哈尔滨工业大学The surface layer of nanofiltration membrane is much denser than that of RO membrane, but it is much looser than that of UF membrane. ( )A:错B:对答案:A:错
When high-strength retention of NaCl with a higher concentration is required, a reverse osmosis membrane is the best choice. When low concentration, divalent ions, and solutes with a molecular weight of 500 to several thousand are required fo
第一章测试1.The challenges of urban water resources include ( ). A:Urban water distribution renders large energy consumption.B:Capital and operational costs of water supply for long distance transportation are high.C:High