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【单选题】
下列哪项可用于痈疮肿毒,烧烫伤,毒蛇咬伤?()A.
金钱草
B.
C.
滑石粉
D.
虎杖
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皮皮学刷刷变学霸
举一反三
【简答题】用气相色谱法定量分析样品组分时，分离度至少为_____________。
【简答题】气相色谱法规定分离度R=1.5为“完全分离”，此时两色谱峰的分离程度大于或等于100%。
【单选题】The great success of the Arab imperial project was that ____.
A.
The imperial culture it created was adopted by numerous non-Arab people.
B.
It made all of the empire’s subjects adopt the Muslim faith.
C.
It erased the hostility and hatred between Arab people and non-Arab people.
【判断题】在售价金额核算法下,连锁企业平时采用综合差价率计算法或分类价差率计算法计算的销售商品应分推的进销差价,可能与己销商品应分摊的实际进销有一定差距。所以,为了真实反映库存商品和销售商品的进销差价,年终应采用盘点商品实际进销差价计算法对商品的进销差价进行一次核实调整。( )
A.
正确
B.
错误
【单选题】以下哪项不是气相色谱法和质谱法这两种分析技术联用的有利条件( )。
A.
气相色谱分离和质谱分析过程均在气态下进行
B.
气相色谱分析的化合物熔点范围适于质谱分析
C.
两种分析法的检测灵敏度相当，气相色谱分离的组分足够质谱检测
D.
两种分析法对样品的制备和预处理要求有相同之处
【单选题】Which of the following is NOT true about imperial examination?
A.
Imperial examination was put into practice in the Tang Dynasty.
B.
In the Song Dynasty, the names of the candidates could be seen on the exam paper.
C.
The Imperial Examination System was gradually standardized and became perfect during the Ming Dynasty.
D.
In the Tang Dynasty, candidates were required to write merely 'Eight-Part' essays.
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