系统命名: ______,它的H-NMR谱中有______个峰,此化合物在浓硫

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问题:

系统命名:

______,它的H-NMR谱中有______个峰,此化合物在浓硫酸作用下发生消去反应,写出所有可能的有机产物的结构简式:______.

考点:有机物的官能团同分异构体有机物按官能团的分类
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2008年9月我国成功发射了“神州七号”载人飞船.为了观察“神舟七号”的运行和宇航员仓外活动情况,飞船利用弹射装置发射一颗“伴星”.伴星经调整后,和“神舟七号”一样绕地球做匀速圆周运动,但比“神舟七号”离地面稍高一些,如图所示,那么(  )

A.伴星的运行周期比“神舟七号”稍大一些

B.伴星的运行速度比“神舟七号”稍大一些

C.伴星的运行角速度比“神舟七号”稍大一些

D.伴星的向心加速度比“神舟七号”稍大一些

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在对植物进行组织培养时,必需要添加的两种植物激素是生长素和细胞分裂素,当生长素浓度与细胞分裂素浓度相当时,植物的愈伤组织将()

A.分化出根

B.分化出芽

C.不分化

D.同时分化出根和芽

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简述活性染料的染色对象及方法?

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During the past three years, the staff members of the Smithsonian Institution’s Family Folklore Project have interviewed hundreds of persons about their family folklore. To prepare for these interviews we drew upon our academic backgrounds in folklore and American studies, and upon our personal backgrounds as members of families, in addition, we reviewed the major instruction guides in genealogy, oral history, family history, and folklore fieldwork. Although these publications were all helpful in some way, no single book was completely adequate since family folklore combines aspects of all the above disciplines. Over time we have developed guidelines and questions that have proven successful for us; we hope that the following suggestions will be helpful to anyone who wishes to collect the folklore of his or her own family.

According to the passage, which kind of instructional guide was NOT consulted as a source

A.Clinical sociology

B.Genealogy guides

C.Oral history

D.Folklore fieldwork

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焦油加工的主要任务是获得酚、萘、蒽等纯产品和()等粗产品。

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