【简答题】阅读理解 Last month, students from one hundred and three universities in eightyeight countries took part in an international computer programming contest. The Battle of the Brains took place in Harbin, Ch...
【简答题】肌瘤原发于子宫肌层,根据肌瘤与子宫肌壁的关系可分为 、 、 。
【单选题】采用HPLC法进行杂质检查,当没有杂质对照品时,可以采用不加校正因子的主成分自身对照法,但是要求( )
A.
杂质结构与主成分结构相似,相对响应因子在0.9~1.1
B.
杂质结构与主成分结构相似,相对保留时间在0.9~1.1
C.
杂质结构与主成分结构相似,相对保留因子在0.9~1.1
D.
杂质结构与主成分结构相似,相对计算因子在0.9~1.1
【单选题】Our school held a respect-parent activity last month, ______ our students benefited a lot.