【判断题】
36.弱酸阳离子交换树脂适合处理碱度与硬度比值在1.0~1.2之间的水。(   )
A. 对
B. 错
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答案
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【判断题】
37.由于温度对化学反应一般都有影响,所以化学仪表一般都有温度补偿元件或对水样采取恒温措施。(   )
A. 对
B. 错
【判断题】
38.酸度计长期使用时,要经常用标准缓冲溶液定位,才能保证仪器准确测量。(   )
A. 对
B. 错
【判断题】
39.分光光度计中的光电池、光电管是接收光的元件,因此绝对不怕光。(   )
A. 对
B. 错
【判断题】
40.pH表与pNa表所用甘汞电极构造基本相同,只是内装电解质液的浓度不同。(   )
A. 对
B. 错
【判断题】
41.EDTA对每一种金属离子都有一个可定量滴定的pH值范围。(   )
A. 对
B. 错
【判断题】
42.电渗析除盐中的离子交换膜的作用与离子交换除盐中离子交换树脂的相同,都是起离子交换作用。(   )
A. 对
B. 错
【判断题】
43.不同液体在相同压力下沸点不同,但同一液体在不同压力下沸点也不同。(   )
A. 对
B. 错
【判断题】
44.空气的压缩过程越接近等温过程,则消耗的功越多。(   )
A. 对
B. 错
【判断题】
45.工质的压力、温度、比容三者关系中,当温度不变时,压力与比容成反比。
A. 对
B. 错
【判断题】
46.一切防火措施都是为了破坏已经产生的燃烧条件。(   )
A. 对
B. 错
【判断题】
47.消防工作的方针是以消为主,以防为辅。(   )
A. 对
B. 错
【判断题】
48.在一定温度下,导体的电阻与导体的长度成正比,与导体截面积成反比。(    )
A. 对
B. 错
【判断题】
49.欧姆定律指出:通过电阻的电流与电阻两端的电压成正比,而与电阻成反比。(   )
A. 对
B. 错
【判断题】
50.主蒸汽管道保温后,可以防止热传递过程的发生。(   )
A. 对
B. 错
【判断题】
51.EDTA对金属离子络合能力随酸度的不同而不同,酸度越低,络合能力越强。(    )
A. 对
B. 错
【判断题】
52.为了使显色反应进行完全,一般要加入适当过量的显色剂。(    )
A. 对
B. 错
【判断题】
53.朗伯比耳定律只能适用于单色光和低浓度的有色溶液。(    )
A. 对
B. 错
【判断题】
54.金属在水溶液中或潮湿空气中的腐蚀属于化学腐蚀。(    )
A. 对
B. 错
【判断题】
55.混凝处理用铝盐作混凝剂时,水的pH值太高或太低,对混凝效果都不会有影响。(    )
A. 对
B. 错
【判断题】
56.交换容量大是大孔型树脂的主要优势。(    )
A. 对
B. 错
【判断题】
57.离子交换树脂的选择性系数与树脂的种类有关,与温度、浓度的变化无关。( )
A. 对
B. 错
【判断题】
58.弱酸阳离子交换树脂对水中非碳酸盐硬度和中性盐基本上无交换能力。(    )
A. 对
B. 错
【判断题】
59.在正常运行时,阴离子交换器入口水的酸度,近似等于进水中氯离子、硫酸根及硝酸根等强酸阴离子含量的总和。(    )
A. 对
B. 错
【判断题】
60.电渗析除盐过程中,阳极室呈酸性,阴极室呈碱性。(    )
A. 对
B. 错
【判断题】
61.经常备用的锅炉比运行锅炉的腐蚀轻的多。(    )
A. 对
B. 错
【判断题】
62.一般对钢铁有缓蚀效率的缓蚀剂,同样对铜也有效。(    )
A. 对
B. 错
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63.锅炉在酸洗中,若用亚硝酸钠钝化,则钝化后对其钝化液必须处理,因为它是致癌物、有毒。(    )
A. 对
B. 错
【判断题】
64.在混床中,如果阴阳树脂的配比稍有变化,则对出水水质会有影响。(    )
A. 对
B. 错
【判断题】
65.反渗透膜对离子价数越高的电解质,除盐效果越差。(    )
A. 对
B. 错
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66.汽水取样时应先开启冷却水门,再慢慢开启取样管的汽水门。(    )
A. 对
B. 错
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67.酸碱罐的玻璃液位管,应装塑料防护罩。(    )
A. 对
B. 错
【判断题】
68.搬运密封的浓酸或浓苛性钠溶液的坛子时,禁止用肩扛、背驮或抱住的方法搬运。(    )
A. 对
B. 错
【判断题】
69.液面上压力越高,液体的蒸发速度越快。(    )
A. 对
B. 错
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70.1kg干蒸汽中含饱和蒸汽水的质量分数称为湿度。(    )
A. 对
B. 错
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71.同一体积的物体比容越大,表明物质越轻,密度越大,表明物质越重。(    )
A. 对
B. 错
【判断题】
72.凡是有温差的物体就一定有热量传递。(    )
A. 对
B. 错
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73.导体中电流的正方向与自由电子的流动方向相同。(    )
A. 对
B. 错
【判断题】
74.电流通过电阻时,电阻就会发热,将电能转变成热能,这种现象叫作电流的热效应。(    )
A. 对
B. 错
【判断题】
75.相电压为发电机(变压器)的每相绕组两端的电压,即火线与零线的电压。(    )
A. 对
B. 错
【判断题】
76.微电池腐蚀中,遭到腐蚀的是阳极。(   )
A. 对
B. 错
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