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【多选题】
合成镇痛药包括以下哪些结构类型A.
三环类
B.
吗啡喃类
C.
苯吗喃类
D.
哌啶类
E.
氨基酮类
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反馈参考答案：
举一反三
【简答题】专门的关系运算包括 ________ 、投影、连接、除运算等。
【单选题】______ is unfit for the office. A. It seems to me that B. It seems to me that he C. That seems he D. That seems to him that
A.
It seems to me that
B.
It seems to me that he
C.
That seems he
D.
That seems to him that
【简答题】专门的关系运算包括()、()、()、除等运算。
【单选题】选择填空。 That glass looks nice. Please pass______. [ ]
A.
me it
B.
it me
C.
me to it
D.
it to me
【简答题】Now, talk about what sickens you and what bugs you in your life.(造两个句子) ---- It sickens me to see / It sickens me that .. ----It bugs me to see/It bugs me that..
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