【判断题】
凝结水硬度大,主要是由蒸汽品质差引起的
A. 对
B. 错
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答案
B
解析
暂无解析
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锅炉减温水不合格,将直接影响过热蒸汽品质
A. 对
B. 错
【判断题】
为了减少锅炉排污损失的水量和热量,所采取的措施是将连续排污水引入扩容器
A. 对
B. 错
【判断题】
定期排污应在锅炉高负荷时进行,因此时水循环速度高,排污效果好
A. 对
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【判断题】
锅炉形成钙、镁水垢的原因是炉水中钙、镁盐类的离子浓度的乘积超过了溶度积
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空白试验的目的是为了检查消除因试剂和器皿所引入的系统误差
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酸碱指示剂的颜色随溶液pH值的改变而变化
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B. 错
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离子交换树脂的含水量是指除去外部水分后,树脂样品中的平衡水量
A. 对
B. 错
【判断题】
PNa表有温度补偿,因此任何温度下都可以准确测出溶液中钠离子含量
A. 对
B. 错
【判断题】
pH表和PNa表所用甘汞电极构造基本相同,只是内装电解液的浓度不同
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对强碱性阴树脂适当增加再生剂用量,不仅能提高其工作交换容量,而且除硅效果有显著的提高
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【判断题】
自然通风冷却塔是依据塔内外空气温度形成的温差来抽风的
A. 对
B. 错
【判断题】
半透膜两侧的浓度差愈大,要达到反渗透的目的所需施加的压力就愈大
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B. 错
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靛蓝二磺酸钠法测水中溶解氧时,还原靛蓝二磺酸钠缓冲液必须由蓝色转变成黄色后方可使用
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离子交换除盐系统中,水的流速越慢,交换越彻底,出水水质也就越好
A. 对
B. 错
【判断题】
当饱和蒸汽品质较好而过热蒸汽品质不良时,则表明蒸汽在减温器内被污染
A. 对
B. 错
【判断题】
氢气系统开启截门时,必须缓慢,避免开得过快,氢气流速太大,引起摩擦起火
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测定水中活性硅时,可用玻璃瓶盛装水样
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水通过离子交换树脂层的速度愈大,交换器出口树脂保护层愈薄
A. 对
B. 错
【判断题】
强酸阳离子交换树脂漏入阴床,会引起阴床出水水质变差
A. 对
B. 错
【判断题】
提高碱再生液的温度对转化硅酸型树脂的洗脱率有明显的提高
A. 对
B. 错
【判断题】
为了便于阴阳树脂的分离,混床中阳树脂与阴树脂的湿真密度差应大于15%~20%
A. 对
B. 错
【判断题】
反渗透装置的透水率随进水中杂质含量增加而增加
A. 对
B. 错
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B. 错
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B. 错
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A. 对
B. 错
【判断题】
离子交换树脂的交联度值愈小,树脂的含水率愈大,溶胀性愈大
A. 对
B. 错
【判断题】
离子交换树脂的交联度值愈小,树脂的含水率愈大,抗污染性能愈强
A. 对
B. 错
【判断题】
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离子交换剂再生后能使其交换容量完全恢复
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阳床出水呈酸性,阴床出水呈碱性
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