以下三题基于包含如下三个关系的“学生-选课-课程”数据库:S(S#,SNAME,SE

题型:单项选择题

问题:

以下三题基于包含如下三个关系的“学生-选课-课程”数据库:S(S#,SNAME,SEX,DEPARTMENT)主码是S#C(C#,CNAME,TEACHER)主码是C#SC(S#,C#,GRADE)主码是(S#,C#)

下列关于保持数据库完整性的叙述中,哪一条是不正确的

A.向关系SC插入元组时,S#和C#都不能是空值(NULL)

B.可以任意删除关系S中的元组

C.向任何一个关系插入元组时,必须保证该关系主码值的唯一性

D.可以任意删除关系SC中的元组

考点:计算机等级考试数据库技术国家计算机三级(数据库技术)71
题型:单项选择题

填写下表中的有关内容

甲地(23°N,175°E)乙地(70°S,15°W)
南半球还是北半球
东半球还是西半球
低纬、中纬还是高纬度
五带中哪一带热带
有无阳光直射现象
有无极昼极夜现象
7月份属于什么季节
1月份昼夜长短情况

题型:单项选择题

New Annotated Sherlock Holmes by Arthur Conan Doyle

Price: £28.00

Publication Date: 30/11/2006

Publisher’s description:

Collect Doyle’s fifty-six classic short stories, arranged in the order in which they appeared in late-nineteenth-and-early-twentieth-century book editions, in a set complemented by four novels, editor biographies of Doyle, Holmes, and Watson as well as literary and cultural details about Victorian society.

Breaking Ground by Daniel Libeskind

Price: £16.00

Publication Date:11/10/2006

Brief description:

This is a book about the adventure life that can offer each of us if we seize it, and about the powerful forces of tragedy, memory and hope. For Daniel Libeskind, life’s adventure has been through architecture, which he has found has the power to reshape human experience. Although often relating to the past, his buildings are about the future. This biology of one man’s journey brings together history, personal experience, our physical environment and a fresh international vision.

In the Shadow of No Towers by Art Spiegelman

Price: £16.00

Publication Date:02/09/2006

Brief description:

On 11th September 2001, Art Spiegelman raced to the world Trade Center, not knowing if his daughter Nadja was alive or dead. Once she was found safe---in her school at the foot of the burning towers---he returned home, to mediate(反省) on the trauma(创伤), and to work on a comic strip(连环漫画). In the Shadow of No Towers is New Yorker Art Spiegelman’s extraordinary account of “the hijacking(劫机) on 9.11 and the following hijacking of those events” by America.

Light on Snow by Anita Shreve

Price: £14.00

Publication Date:07/10/2006

Publisher’s description:

This is the 11th novel by Anita Shreve, the critically accepted bestseller. A moving story of love and courage and tragedy and of the ways in which the human heart always seeks to heal itself.

Last Child in the Woods by Richard Louv

Price: £20.99

Publication Date:11/08/2006

Brief description:

Camping in the garden, riding bikes through the woods, climbing trees, picking wildflowers, running through piles of autumn leaves… these are the things childhood memories are made of. But for a whole generation of today’s children the pleasures of a free-range childhood are missing, and their indoor habits contribute to obesity, attention disorder and childhood depression. This book shows how our children have become increasingly distanced from nature, why this matters and how we can make a difference. Richard Louv is chairman of the Children and Nature Network and co-chair of the National Forum on Children and Nature. He is the author of seven other books and has written for newspapers and magazines including the New York Times and the Washington Post.

小题1:Who is the writer of the latest book published among the four books?

A.Arthur Conan Doyle

B.Daniel Libeskind

C.Art Spiegelman

D.Anita Shreve小题2:If one wants to know something about Victorian society, he or she may read____.

A.Light on Snow

B.In the Shadow of No Towers

C.Breaking Ground

D.New Annotated Sherlock Holmes小题3:Which of the following refers to tragedies?

A.Light on Snow & Breaking Ground

B.Light on Snow & In the Shadow of No Towers

C.In the Shadow of No Towers & Breaking Ground

D.New Annotated Sherlock Holmes & In the Shadow of No Towers小题4:Which book is based on a real big event?

A.Breaking Ground

B.In the Shadow of No Towers

C.Light on Snow

D.Last Child in The Woods小题5:Who has also written for newspapers and magazines according to the text?

A.Arthur Conan Doyle.

B.Daniel Libeskind

C.Art Spiegelman

D.Richard Louv

题型:单项选择题

苯丙酮尿症的主要临床表现是()

A.智能低下+惊厥

B.智能低下+多发畸形

C.生后毛发、皮肤和虹膜色浅

D.智能低下+毛发、皮肤和虹膜色浅+尿臭味

E.惊厥+多发畸形

题型:单项选择题

下列图片反映了中国近代史上两次历史性的巨变,对两次巨变共同点的认识正确的是()

①成为中国民主政治发展的新起点

②推翻了两千多年的封建专制制度

③改写了半殖民地半封建的历史

④推动了中国工业化的发展

A、①②

B、②③

C、③④

D、①④

题型:单项选择题

男患者,32岁,近十天小便灼痛,经查为淋球菌感染,患者对青霉素有过敏史,宜选用()

A.红霉素

B.氨苄青霉素

C.大观霉素

D.链霉素

E.多黏菌素

更多题库