问题:盐水中的()被()杀死,腐殖酸等有机物被()氧化分解成为小分子。...
Saturday, October 19, 2024
问题:反洗强度应控制在保证树脂膨胀率为()。A、20-30%B、30-50%C、50-60%D、60-80%...
Wednesday, September 3, 2025
Thursday, June 19, 2025
问题:当膜两端没有压力差时,溶质以扩散方式从()。A、高浓度一侧流向低浓度一侧B、从低浓度一侧流向高浓度一侧C、不流动D、都有可能...
Saturday, October 19, 2024
Wednesday, September 3, 2025
Saturday, November 9, 2024
Saturday, September 28, 2024
Thursday, September 12, 2024
Thursday, June 19, 2025
Saturday, February 15, 2025
Wednesday, September 3, 2025
问题:含有氢或铵盐的盐水进入电抗后,易生成HCl,其对系统的安全特别是液氯生产有很大的威胁。...
Monday, March 31, 2025
问题:在实际生产中,制取出的纯水极易受污染,而使水质有影响。...
Saturday, November 9, 2024
问题:当强酸型树脂由钙型变为钠型时树脂体积会()。A、缩小B、扩大C、不变D、无法确定...
Saturday, September 28, 2024
Saturday, July 20, 2024
Saturday, October 19, 2024
问题:在盐水沉降过程中,颗粒的沉降速度主要与()有关。A、进水量B、颗粒直径C、盐水温度...
Wednesday, September 3, 2025
Thursday, June 19, 2025
Wednesday, September 11, 2024
Saturday, August 31, 2024