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【单选题】
-CH 2 CH 2 CH 3 代表(  )
A.
甲基
B.
C.
丙基
D.
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参考答案:
举一反三
【单选题】Why did Gail's father oppose their marriage?
A.
Because he hated Mark took his daughter away.
B.
Because he thought Mark was poor.
C.
Because he doubted that Mark intended to remain in the USA by marrying Gail.
D.
Because he would introduce a better man to her daughter.
【判断题】CD4+T细胞不但可以在活化阶段辅助B细胞,也能在效应阶段辅助B细胞。
A.
正确
B.
错误
【单选题】Why did Gail's mother disapprove their marriage?
A.
Because Mark's color is black.
B.
Because she was afraid of friends' talk.
C.
Because she didn't like Mark.
D.
Because she worried that Gail would marry Mark for the wrong reasons that she married her husband.
【判断题】在滴定分析中,所使用滴定管、锥形瓶均要用操作溶液润洗。
A.
正确
B.
错误
【判断题】在滴定分析中,滴定管、锥形瓶均要用操作溶液润洗。
A.
正确
B.
错误
【单选题】听力原文:Why weren't you at the annual conference? (A) It's about the financial aid. (B) I thought it was next week. (C) Yeah, it was very informative. (40)
A.
B.
C.
【简答题】液力自动变速器中使用的离合器多数为多片湿式,主要由___、___、___和___等几部分组成。
【单选题】Why did Gail's mother disapprove of their marriage?
A.
Mark is black.
B.
Gail may be marrying Mark for the same wrong reasons that she married her father.
【简答题】对学术不端行为的认识误区。
【多选题】下列属于传动螺纹是( )
A.
普通螺纹
B.
管螺纹
C.
锯齿形螺纹
D.
梯形螺纹
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