一辆汽车以9m/s的初速度,1m/s2的加速度加速行驶了12秒,求汽车在加速阶段

题型:问答题

问题:

一辆汽车以9m/s的初速度,1m/s2的加速度加速行驶了12秒,求汽车在加速阶段行驶的位移是多少?

考点:匀变速直线运动的位移与时间的关系
题型:问答题

在对中学生如何对待政治生活的问卷调查中,11%的中学生认为“政治是政府官

员的事,与我无关”,对此观点说法正确的是(  )

A.是正确的,学生最主要的任务是学习,关不关心政治无所谓

B.错误的,中学生是国家的未来,要以政治为主。

C.是正确的,中学生还未走出社会,暂时不需要了解国家大事。

D.是错误的。政治生活与每个人的切身利益息息相关,中学生也要重视

题型:问答题

RIPv2路由信息协议是一种基于 协议的应用层协议。

A.TCP
B.IP
C.UDP
D.ICMP

题型:问答题

.

Part Ⅰ starts with a brief introductory chapter and then takes up Style and Organization, covering them in that order because skill or lack of skill in style affects all writing, while much technical writing is so short as to offer no problems of organization. These chapters are followed by one on Mechanics, covering matters of form that are peculiar(独有) to technical writing or else crop up in it with abnormal frequency.

The chapter on Special Problems, which follows, performs a double function. It provides writing assignments that may be used while the study of style, organization, and mechanics is still under way, and it explains ways of handling certain problems that may arise during the writing of reports, proposals, and other longer forms. We have also expanded the treatment of technical articles — recognizing the potential contribution of article writing to the career of the writer and the value of the article to science and technology.

In Part Ⅱ, a change of emphasis at one point is reflected in the new title for Chapter 8, Nonformal Reports — Their Variation in Form and Purpose, which was formerly called Special Types of Reports. Though certain special types of reports are still discussed, additional emphasis is given to the fact that there does not exist any universally accepted set of types, under which all reports can be classified.

Two other extensive changes have been made in Part Ⅱ: The chapter on Proposals, which first appeared in the second edition, has been rewritten and substantially expanded so as to cover that important subject more thoroughly. Also, an entirely new chapter, Oral Presentation of Technical Information, has been added. Though a study of this chapter is no substitute for training in public speaking, we believe that its recommendations can nevertheless be of substantial assistance to those who use this book on the numerous occasions when they will be called upon to present their ideas in person before a small group or a large audience.

1.The passage is most probably a preface to ____.

A. a technical writing handbook   B. a handbook on composition

C. a book on a literary writing    D. a scientific paper

2. In Part I, the writer arranges the chapters in the order of ____.

 A. Introduction—Organization—Special Problems—Style—Nonformal Reports

 B. Introduction—Style—Organization—Special Types of Reports—Mechanics

 C. Introduction—Style—Organization—Mechanics—Special Problems

 D. Introduction—Style—Proposals—Special Problems—Mechanics

3.You can find some writing exercises in ____.

 A. the chapter on Organization        B. the chapter on Style

 C. the chapter on Special Problems     D. the chapter on Proposals

4. According to the passage, the chapter on Oral Presentation of Technical Information appears in ____ of the book.

 A. Part Ⅰ of the first edition

 B. Part Ⅱ of the second edition

 C. Part Ⅰ of the second edition

 D. Part Ⅱ of the third edition

5. Which of the following is not true of Part Ⅱ of the new edition?

 A. There isn’t the chapter on Special Types of Reports.

 B. The chapter on Oral Presentation of Technical Information is rewritten and expanded.

 C. The chapter on Proposals is a revised chapter.

 D. There is a change of the title of Chapter 8.

题型:问答题

阵发性室性心动过速需要尽早终止发作,其最主要的原因为()

A.可发展为心室颤动

B.可引起心源性休克

C.可诱发心绞痛

D.可诱发心力衰竭

E.可发生脑梗死

题型:问答题

在网页中使用的最为普遍的图像格式主要是()。

A、GIF和JPG

B、GIF和BMP

C、BMP和JPG

D、BMP和PSD

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