【简答题】听音,填一填,读两遍。 1. I'm going to _____ in the summer. 2. I will buy a kite. What do you _____? 3. Class! Look at the blackboard _____. 4. Wang Bing is taller and _____ than Gao Shan. 5. Who is _____, Ben o...
【单选题】下列关于核酸分离纯化说法错误的是
D.
分离 DNA 时为了去除 RNA 可以加入 RNase
E.
核酸以 SYBR Green I 染色应注意避光
【简答题】补全对话。选择恰当的句子完成对话,其中有两项为多余选项。 A. By plane. B. What are you going to do in Shanghai? C. Will you go there with your parents? D. We're going to visit China Pavilion (中国馆) . E. How long did you stay in Sh...
【简答题】改错。 ( ) 1. I readed an interesting book last night . ________________ A B C ( ) 2. I usually go rowing and fish . ________________ A B C ( ...
【判断题】对于多元线性回归模型函数 形式 设定偏误的检验, 可以采用拉姆齐的RESET检验 ,为了避免出现多重共线性,可以引入Y估计值的若干次幂作为替代变量进行检验。