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【多选题】
《中国药典》规定，采用色谱法分析时，必须对仪器进行系统适用性试验，应包括下列哪些内容A.
理论塔板数
B.
调整保留时间
C.
分离度
D.
重复性
E.
拖尾因子
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反馈参考答案：
举一反三
【单选题】SECTION B PASSAGES Directions: In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow. 听力原文： My father woke me up early one morning...
A.
anxious and worried
B.
proud and excited
C.
nervous and confused
D.
inspired and confident
【简答题】阅读理解 A few years ago, when I was still in high school, I met a wonderful and warm teacher. At that time in my life, there were many changes to adjust to, apart from the usual age troubles. My pare...
【简答题】My brother Hershel celebrated his seenth birthday on January 4th, 1943. Unexpectedly, there was a(n) 1 in my family. Seeing young men from our village race to join the army, Hershel was greatly 2...
【简答题】___教学使得小学英语课堂生动有趣。
【简答题】My brother Hershel celebrated his seenth birthday on January 4th, 1943. Unexpectedly, there was a(n) 1 in my family. Seeing young men from our village race to join the army, Hershel was greatly 2...
【简答题】下列关于竞争性抑制剂的论述哪项是正确的?( )
【简答题】阅读短文，回答问题。 Five years ago, I was a student in a middle school. There were five people in my family, my mother, my father, my sister, my brother and I. My father was a worker. My mother was a teacher o...
【简答题】Paragraph 2 Nothing special
happened on my flight to Seattle last week. My brother drove me to the airport.
(While, Before, When) I arrived at the check-in area, I printed out my boarding
pass and che...
【简答题】My elder brother Steve, in the absence of my father who died when I was six, gave me important lessons in values that helped me grow into an . For instance, Steve taught me to face the results of...
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