下列内容属于公安队伍正规化建设所要规范的的( )。 A．规范行为举止 B．规范机构

我会填。 4×3=12，12+7=19。→   4×3+7                                        =12+7                                        =19 （1）3×9=27，27-20=7 （2）4×5=20，10+20=30 （3）6×4=24，24+12=36

某房屋建筑公司在某市承建某高校13层留学生公寓，主体是全现浇钢筋混凝土框架-剪力墙结构，建筑面积为3万m2，建筑高度为54m，采用筏板基础。

普通硅酸盐水泥拌制的混凝土养护时间不得少于( )天；矿渣水泥、火山灰硅酸盐水泥等拌制的混凝土养护时间不得少于( )天。

A．7，14

B．7，21

C．14，21

D．21，28

In his book The Tipping Point, Malcolm Gladwell argues that "social epidemics" are driven in large part by the actions of a tiny minority of special individuals, often called influentials, who are unusually informed, persuasive, or well connected. The idea is intuitively compelling--we think we see it happening all the time--but it doesn’t explain how ideas actually spread.

The supposed importance of influentials derives from a plausible-sounding but largely untested theory called the "two-step flow of communication": Information flows from the media to the influentials and from them to everyone else. Marketers have embraced the two-step flow because it suggests that if they can just find and influence the influentials, those select people will do most of the work for them. The theory also seems to explain the sudden and unexpected popularity of certain looks, brands, or neighborhoods. In many such cases, a cursory search for causes finds that some small group of people was wearing, promoting or developing whatever it is before anyone else paid attention. Anecdotal evidence of this kind fits nicely with the idea that only certain special people can drive trends.

In their recent work, however, some researchers have come up with the finding that influentials have far less impact on social epidemics than is generally supposed. In fact, they don’t seem to be required at all.

The researchers’ argument stems from a simple observation about social influence, with the exception of a few celebrities like Oprah Winfrey--whose outside presence is primarily a function of media, not interpersonal influence--even the most influential members of a population simply don’t interact with that many others. Yet it is precisely these non-celebrity influentials who, according to the two-step-flow theory, are supposed to drive social epidemics, by influencing their friends and colleagues directly. For a social epidemic to occur, however, each person so affected must then influence his or her own acquaintances, who must in turn influence theirs, and so on; and just how many others pay attention to each of these people has little to do with the initial influential. If people in the network just two degrees removed from the initial influential prove resistant, for example, the cascade of change won’t propagate very far or affect many people.

Building on the basic truth about interpersonal influence, the researchers studied the dynamics of populations, manipulating a number of variables relating to people’s ability to influence others and their tendency to be influenced.

The author suggests that the "two-step-flow theory" （）

A. serves as a solution to marketing problems

B. has helped explain certain prevalent trends

C. has won support from influentials

D. requires solid evidence for its validity

司马光编撰的《资治通鉴》被认为“鉴于往事，有资于治道”，这与反映中国传统社会具有（）的意识。

A.“以任故国之史报故国”

B.“在史言史，不识忌讳”

C.“史官所任者，万世之事”

D.“殷鉴不远，在夏后之世”

设有三个基本表，表的结构如下所示，请用SQL完成下列查询：
BORROWER．

借书证号	姓名	系名	班级
98001	欧阳	信息系	98-1
98002	刘诚	信息系	98-1
98101	赵林	计算机系	98-2

LOANS：

借书证号	图书馆登记号	借书日期
98001	T 00101	1999.04.01
98002	T00102	1999.05.01
09001	T00201	1999.05.31

BOOKS：

索书号	书名	作者	图书登记号	出版社	价格
TP311.13	数据库系统与应用	李昭原	T00101	科学	19.00
TP311.13	数据库原理与应用	李昭原	T00102	科学	19.00
TP.065	数据库系统原理	李昭原	T00201	北航	6.50
TP.1599	数据库原理教程	王珊	T00101	清华	18.50

③建立信息系学生借书的视图SSP，该视图的属性列名由借书证号，姓名，班级，图书登记号，书名，出版社和借书日期组成。