【多选题】【消耗次数:1】
常用的柱色谱法的柱填料有
硅胶
氧化铝
大孔树脂
活性炭
硅藻土
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相关题目
【单选题】 下列一般不作为柱色谱法的柱填料的是
①  硅胶
②  氧化铝
③  大孔树脂
④  硝酸银
⑤  硅藻土
【多选题】 吸附柱色谱常用填料有
①  凝胶
②  氧化铝
③  聚酰胺
④  大孔吸附树脂
【判断题】 用薄层色谱法鉴别含生物碱的中药制剂时 常用的吸附剂为硅胶和氧化铝
①  正确
②  错误
【单选题】 色谱所用的氧化铝
①  活性的强弱用活度级I~V表示,活度V级吸附力最弱
②  活性的强弱用活度级I~V表示,活度V级吸附力最强
③  中性氧化铝适于分离非极性物质
④  活性与含水量无关
【单选题】 高效液相色谱法测定多糖时用的色谱柱一般为
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④  氧化铝柱
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①  正确
②  错误
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②  液液分配柱色谱
③  离子交换柱色谱
④  分子排阻柱色谱
【判断题】 气相色谱法中载气及流速对色谱柱效能没有影响。
①  正确
②  错误
【单选题】 在吸附柱色谱装柱过程中,应不断敲打色谱柱,目的是
①  使操作速度加快
②  加强分离效果
③  使色谱柱填充均匀并没有气泡
④  便于收集分离后的组分
【单选题】 氧化铝陶瓷的特点,错误的是()
①  透光性极佳
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④  HF不能酸蚀
⑤  遮色效果好
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【单选题】 Alotofthesmalltownsintheareaaredefinitelyworth ____.
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①  except ?
②  even ?
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②  I’m very pleased.
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④  What a pleasure.
【单选题】 I think we’d better ____ , otherwise we will be late for class.
①  to hurry up
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④  hurry up