应答器编号由〔大区编号+分区编号〕与〔车站编号+应答器单元编号〕共同构成

题型:判断题

问题:

应答器编号由〔大区编号+分区编号〕与〔车站编号+应答器单元编号〕共同构成

考点:铁路信号工CTCS设备系统CTCS设备系统题库
题型:判断题

下列各组词语中,读音全都不相同的一组是[ ]

A. 毁 官 掌而谈 中流

B. 薄 然 缠绵恻 短流长

C. 样 拟 逆之交 顶礼

D. 奶 贿 落大方 一丘之

题型:判断题
下列4个函数中是奇函数且最小正周期为2π的是(  )
A.y=
1
2
tanx
B.y=cos(π-x)C.y=sin2xD.y=cos(x+
π
2
)
题型:判断题

外国投资者进行战略投资后,投资者减持股份使上市公司外资股比例低于(),上市公司应在()日内向商务部备案并办理变更外商投资企业批准证书的相关手续。

A.10%,10 

B.20%,10 

C.25%,10 

D.25%,20

题型:判断题

The sudden, dramatic explosion in value of online social media sites like Facebook and Twitter is reminiscent of the rise, about 15 years ago, of the online businesses that created the "dotcom bubble. " The Internet was far less widely used than it is today. Still, visionaries saw the potential for the Internet we have today, so virtual companies sprung up and grew like weeds as investors threw money their way. Some, like Google and Amazon, developed an enduring online presence and lasting financial value. But far too many quickly lost value when it became apparent that their rapid growth wasn’t yielding revenue.

So, how much is Facebook’s network of users really worth The potential is clear—when so many people are gathered in one virtual place, offering so much personal information about themselves, they create an unprecedented platform for targeted advertising. Or they would, if they were on the network to shop. When eBay and Amazon suggest products to their customers, they’re talking to people who’ve already proven that they’re interested in buying similar products. People go on Facebook for a variety of reasons-to catch up with old friends, share pictures, make new acquaintances, and talk, sometimes endlessly, about themselves. Whether they’ll appreciate having their virtual conversations interrupted by advertising, targeted or not, remains unclear.

It’s also unclear whether Facebook will actually be able to share information about its users’ browsing habits with advertisers. Complaints about the ineffectiveness of Facebook’s privacy policies have arisen in multiple countries, part of a larger social concern about how private information gets used on line. In December, the Federal Trade Commission issued a proposed framework that, among other things, would permit Facebook users to block advertisers from accessing information about their online interests. If that framework is implemented and widely used by Facebook subscribers, it could seriously impair the site’s value as a potential platform for targeted marketing.

What is clear is that Goldman Sachs has a significant interest in Facebook’s financial value, at least for the short term. Goldman Sachs’ decision to invest heavily in Facebook has had some interesting impacts. For one thing, the investment has allowed Facebook an opportunity to postpone issuing an IPO. That means that, at least for the moment, Facebook doesn’t yet have to disclose its finances or publicly address investor complaints.

Goldman Sachs’ investment also puts the firm in an ideal position to handle Facebook’s IPO when it eventually is issued, perhaps sometime next year. That, of course, has the potential to generate substantial revenues for Goldman Sachs’ clients. Google’s 2004 IPO raised an initial $1.2 billion for the company. After all the propaganda, Facebook’s IPO can hardly be expected to raise less. However, there remains a significant question as to whether Facebook’s potential for generating income is more virtual than real. If it turns out that Facebook can’t live up to its potential for generating advertising revenue, venture capitalists who invest for the long term may get burned.

The text is written to answer the question()

A. Will the social media be the next dotcom bubble

B. Does Goldman Sachs really want to invest in Facebook

C. When will it be the right time for Facebook to issue its IPO

D. What lessons can we learn from the ups and downs of social media

题型:判断题

某女,51岁,脑血管意外,经治疗后病情稳定,但仍遗留下肢运动障碍,给予下肢功能康复锻炼。此种护理干预属于哪级预防

A.初级预防
B.一级预防
C.二级预防
D.三级预防
E.全程预防

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