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【单选题】
有质叙述错误的是A.
注入人、动物体内可引起发热
B.
多是G-菌细胞壁中的脂多糖
C.
可被121℃ 20min处理破坏
D.
可经吸附剂、石棉板除掉
E.
耐高温
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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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