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【简答题】
A/O工艺的前端采用缺氧池,在其中污染物会发生厌氧反应,请问厌氧生化反应分为几个阶段?这些阶段是如何进行生化反应的?
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【多选题】固体干燥剂吸附脱水：是利用多孔性的干燥剂吸附天然气中的水蒸气。固体干燥剂很多，天然气工业上常用的有（）等。Solid desiccant adsorption dehydration: is the use of porous desiccant adsorption of water vapor in natural gas. There are many solid desiccant, si...
A.
硅胶
B.
活性氧化铝
C.
铝矾土
D.
分子筛
【单选题】After the State Environmental Protection Administration of China announced the water pollution of Songhua River, the expert advisory group in charge of the water pollution treatment of Songhua River p...
A.
Silica gel
B.
Activated carbon
C.
Bamboo charcoal
D.
Sponge
【判断题】固体干燥剂吸附脱水：是利用多孔性的干燥剂吸附天然气中的水蒸气。固体干燥剂很多，天然气工业上常用的有硅胶、活性氧化铝、铝矾土和分子筛等。Solid desiccant adsorption dehydration: is the use of porous desiccant adsorption of water vapor in natural gas. There are many solid...
A.
正确
B.
错误
【简答题】Carry out the method for High performance liquid chromatography (Appendix VI D). 1. Chromatographic conditions and system suitability test Use a column packed with octadecylsilane bonded silica gel an...
【单选题】The use of a ( ) gel and a high-density-pore-gradient resolving gel was primarily responsible for the success of this separation.
A.
stacking
B.
concentration
C.
concentrated
D.
stacked
【简答题】在Fe-Fe3C相图中，合金冷却通过PSK时发生共析转变，生成的产物称为（）。
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