运用强制原理的原则包括()原则。A．安全第一和监督 B．本质安全化 C．封闭 D．激

In the early days of the internet, the idea that it represented an entirely new and separate realm, distinct from the real world, was seized upon by both advocates and critics of the new technology. Advocates liked the idea that the virtual world was a placeless datasphere, liberated from constraints and restrictions of the real world, and an opportunity for a fresh start. For instance, John Perry Barlow, an internet activist, issued the "Declaration of the Independence of Cyberspace" in February 1996. He thundered, "Governments of the industrial world, I come from cyberspace, the new home of mind. Cyberspace does not lie within your borders. We are creating a world that all may enter without privilege or prejudice accorded by race, economic power, military force, or station of birth."

Where Mr. Barlow and other cyber-Utopians found the separation between the real and virtual worlds exciting, however, critics regarded it as a cause for concern. They worried that people were spending too much time online, communicating with people they had never even met in person in chat rooms, virtual game worlds and, more recently, on social-networking sites such as MySpace and Facebook. A study carried out by the Stanford Institute for the Quantitative Study of Society in 2000, for example, found that heavy internet users spent less time talking to friends and family, and warned that the internet could be "the ultimate isolating technology".

Both groups were wrong, of course. The internet has not turned out to be a thing apart. Unpleasant aspects of the real world, such as taxes, censorship, crime and fraud are now features of the virtual world, too. Garners who make real money selling swords, gold and other items in virtual game worlds may now find that the tax man wants to know about it. Designers of virtual objects in Second Life, an online virtual world, are resorting to real-world lawsuits in order to protect their intellectual property.

At the same time, however, some of the most exciting uses of the internet rely on coupling it with the real world. Social networking allows people to stay in touch with their friends online, and plan social activities in the real world. The distinction between online and offline chatter ceases to matter. Or consider Google Earth, which puts satellite images of the whole world on your desktop and allows users to link online data with specific physical locations.

All these approaches treat the internet as an extension or an attachment to the physical world, not a separate space. Rather than seeing the real and virtual realms as distinct and conflicting, in short, it makes sense to see them as complementary and connected. The resulting fusion is not what the Utopians or the critics foresaw, but it suits the rest of us just fine.

From the passage we can find that the author（）

A. supports both advocates and critics of the internet

B. believes that the real and virtual worlds are interdependent

C. is opposed to the fusion of the internet with the physical world

D. argues that real and virtual worlds are distinct and conflicting

马克思指出，“可以根据意识、宗教或随便别的什么来区别人和动物。一旦人们自己开始生产自己的生活资料的时候，这一步是由他们的肉体组织所决定的，人本身就开始把自己和动物区别开来。”通过这段话可以看出，在人与动物区别的层次上，人的社会性本质表现为

A．思维能力

B．社会劳动

C．肉体组织

D．拥有生活资料

有关心身疾病的描述，哪项不对()

A．也称为心理生理疾病

B．是一组与心理紧张有关的躯体疾病

C．支气管哮喘和消化性溃疡不属于心身疾病

D．有器质性病变或确定的病理、生理过程

E．心理社会因素在疾病的发生、发展、治疗和预后中有相对重要的作用

新闻机构中被称为“读者来信部”、“信访部”的是( )

A．记者部
B．群工部
C．广告部
D．发行部

使用射孔器推车拉运射孔器时，可能会造成射孔器滑落，砸伤人员，在拉运时应安装好挡板或挡杆，请问拉运140型射孔器时最多可以摆放几层？