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【判断题】
2.水冷导线内结水垢愈厚,发电机线棉温度愈低。
A. 对
B. 错
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答案
B
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相关试题
【判断题】
3.锅炉充复保护时,应从底部进复,这样有利于排空气。(   )
A. 对
B. 错
【判断题】
4.反渗透CA膜对离子价数愈高的电解质,除盐效果愈差。(   )
A. 对
B. 错
【判断题】
5.一般,树脂含水量的变化可以作为一个侧面反映出树脂内在质量的变化。(   )
A. 对
B. 错
【判断题】
6.单流式过滤器滤料不均匀系数应小于2,双流式过滤器滤料不均匀系数应大于3。(   )
A. 对
B. 错
【判断题】
7.循环水的脱碳对循环冷却水系统是有益的。(   )
A. 对
B. 错
【判断题】
8.交换容量大是大孔型弱酸性树脂的主要优势。(   )
A. 对
B. 错
【判断题】
9.爆炸下限越低的可燃物,越有爆炸的危险。(   )
A. 对
B. 错
【判断题】
10.再生液浓度愈高,再生愈彻底。(   )
A. 对
B. 错
【判断题】
11.为防止造成阳离子交换树脂的损坏,要求进水中含氯量小于0. 1mg/L。(   )
A. 对
B. 错
【判断题】
12.在双层床中,两种树脂的分层愈完全,则运行周期愈长。(   )
A. 对
B. 错
【判断题】
13.为了处理给水中的残余硬度,防止锅炉结垢,所有锅炉都可采用协调磷酸盐处理。(   )
A. 对
B. 错
【判断题】
14.电渗析发生极化现象后,设备的电阻大大增加,电流效率显著升高。(   )
A. 对
B. 错
【判断题】
15.无阀滤池空池启动时,应从进水管正常进水。( )
A. 对
B. 错
【判断题】
16.离子交换器反洗的主要目的是松动树脂。(   )
A. 对
B. 错
【判断题】
17.速流再生固定床再生时,当再生液进完后,应立即大流量冲洗。
A. 对
B. 错
【判断题】
18.浮动床运行到失效时,上层树脂完全失效。(   )
A. 对
B. 错
【判断题】
19.发电的转动设备和电气元件者火时,不准使用沙士火火。(   )
A. 对
B. 错
【判断题】
20.电厂生产用水是为了维持热力循环正常用水循环所需要的补充水。(   )
A. 对
B. 错
【判断题】
21.反渗透装置的透水率或流通量,指单位时间内通过单位膜面积的液体量。(   )
A. 对
B. 错
【判断题】
22.火力发电厂的汽水系统由锅炉、汽轮机、凝汽器、凝结水泵、高低压加热器、除氧器及给水泵等组成。(   )
A. 对
B. 错
【判断题】
23.反渗透装置的透水率随进水中杂质含量增加而增大。
A. 对
B. 错
【判断题】
24.中性水加氧工况是一种使凝结水——给水系统中的高纯水保持中性(pH值为6.5~7.5, 电导率<0.15uS/cm),并添加适量氧化剂(O2或H2O2)的水化学工况。(   )
A. 对
B. 错
【判断题】
25.采用凝结水精处理的电厂,适合使用碱性水工况。(   )
A. 对
B. 错
【简答题】
1.汽轮机积盐对主设备有何危害?
【简答题】
2.影响逆流再生固定床再生效果的因素有哪些?
【简答题】
3.在阴双层床中,为什么胶态硅化合物从弱碱阴树脂层中析出?
【简答题】
4.在稀溶液中,阳离子交换的选择性顺序有哪些规律?
【简答题】
5.何谓‘两票三制’?
【简答题】
6.何谓凝聚过程?
【简答题】
7.给水加氨处理对凝结水精处理混床有何影响?
【简答题】
计算题: 1.在水汽试验方法中,氨缓冲溶液的配制方法是:称取20g氯化铵溶于500mL的高纯水中,加人150mL的浓氨水,然后用高纯水稀释到1L,求此缓冲溶液的pH值为多少? (氨水p=0.90g/mL,A= 26%,M= 17.0;氯化铵M=53.5;pKb=4.75)
【简答题】
计算题: 2.一台阳离子交换器人口水碱度JD = 3.6mmol/L,出口水酸度SD = 2.2mmol/L,周期制水量V = 1600m3,再生时用w=31%到底工业盐酸1304L,求此阳离子交换器的再生酸耗R。(PHCl=1.15kg/L)
【简答题】
电厂水处理技师技能要求试卷 一、调整试验 1.根据本厂情况制定一份澄清器的调整试验方案。
【简答题】
电厂水处理技师技能要求试卷 2.根据本厂情况制定一份离子交换器的调整试验方案。
【简答题】
电厂水处理技师技能要求试卷 二、安全排障 1.纸粉覆盖过滤器爆膜不干净是何原因?应如何处理?
【简答题】
电厂水处理技师技能要求试卷 二、安全排障 2.试述混床再生操作的注意事项。
【简答题】
电厂水处理技师技能要求试卷 三、分析表达 1.叙述阴床、阳床运行直至失效时的各项水质指标的变化。
【单选题】
每个矿井至少应有___个独立直达地面的安全出口,间距不小于30m。
A. 1
B. 2
C. 3
【单选题】
每个生产水平(中段),均应至少有___个便于行人的安全出口。
A. 1
B. 2
C. 3
【单选题】
装有___部在动力上互不依赖的罐笼设备、且提升机均为双回路供电的竖井,可作为安全出口而不必设梯子间。
A. 2
B. 3
C. 4
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