问题 问答题 案例分析题

某机电安装公司总承包了一个炼油厂装置的安装工程,该机电安装公司具有特种设备安装改造维修许可证1级许可资格。炼油厂装置安装工程内容包括:设备安装、管道安装、电气仪表等。其中有一台大型分馏塔,属于Ⅱ类压力容器,采用分三段运入施工现场,需要在现场进行组焊安装。机电安装公司项目部拟采用在基础上由下至上逐段吊装、组对焊接的施工方法,并为此编制了施工方案。根据施工方案,项目部进行了吊装机具的选择,决定租赁一台400t履带式起重机吊装。项目部根据大型吊装具有重大风险的情况,编制了针对吊装作业的安全生产事故应急预案。

施工开始后,发生了下列事件:

1.项目监理工程师认为机电安装公司不具备分馏塔的现场组焊安装资格,要求项目暂停施工。

2.400t履带式起重机进场组装完成之后立即着手进行分馏塔吊装,被监理工程师制止。

吊装作业对安全技术措施有何要求?对吊装作业人员有什么要求?

答案

参考答案:

吊装作业应根据具体的吊装方案制定安全技术措施,形成专项的安全技术措施方案。

施工现场吊装作业人员要求有:选派具有丰富吊装经验的信号指挥人员、司索人员、起重工,作业人员必须持证上岗。

选择题
单项选择题

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.

Goldman Sachs’ investment is a good thing to Facebook because()

A. Facebook is now finding itself short of money

B. venture investment is safer than issuing an IPO

C. it gives Facebook more time for propaganda

D. Facebook does not have to make its finances public yet