【单选题】【消耗次数：1】
基于发射原理的分析方法是
①
光电比色法
②
荧光光度法
③
紫外及可见分光光度法
④
红外光谱
参考答案：
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相关题目
【单选题】
紫外可见分光光度法中吸收系数法的原理是
①
比尔定律
②
被测组分与对照品吸收度相同
③
不同物质吸收系数不同
④
结构相似的组分相互不干扰
⑤
被测组分与杂质吸收系数不同
【单选题】
需采用紫外-可见分光光度法检查的项目为
①
硫酸阿托品中莨菪碱的检查
②
地蒽酚中二羟基蒽醌的检查
③
阿司匹林中“炽灼残渣”检查
④
阿司匹林中“重金属”检查
⑤
阿司匹林中“溶液的澄清度”检查
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often
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frequently
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seldom
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sometimes
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Thanks to Mr. Wang, he kept____ us to remember the important things.?
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to ask ?
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asking ?
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to be asked ?
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not asking?
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They will inform him ____ any progress they make in the experiment.
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about
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on
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of
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with
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due to
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that I fell
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because of falling
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because I fell
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Chinahas launched a number of ____satellites since the 1970s.
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information
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Communication
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TV
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message
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The weather in Harbin is quite different from____ in Hainan.
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the one
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one
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that
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it
【单选题】
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well
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boring
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wonderfully
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beautiful
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any waitress
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other waitresses
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the waitress
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I eagerly answered all the questions, never ____ much about making mistakes.
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worry
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worried
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Im pleased.
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Good night.
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Not so bad. And you?
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