如何进行过程气蒸汽喷射器的启动操作？
参考答案：
关闭尾气过程气进入净化系统阀门，尾气净化系统用氮气充压，急冷塔建立急冷水循环，打开蒸汽喷射器出入口手阀，关闭蒸汽喷射器跨线切断阀，改通开车/低处理量循环线，手动提高喷射器蒸汽流量控制阀开度，引1.0MPa蒸汽入喷射器，同时通过流量控制器控制开车循环线的循环量，并投用开车放空线压力控制器，控制尾气净化系统压力，喷射器来的过程气中的蒸汽在急冷塔冷却成凝结水，由急冷塔液位控制排出。喷射器启动完毕，开车循环建立。
Text 4
| Cyberspace, data superhighway, multi-media—for those who have seen the future, the linking of computers, television and telephones will change our lives forever. Yet for all the talk of a forthcoming technological utopia little attention has been given to the implications of these developments for the poor. As with all new high technology, while the West concerns itself with the "how". the question of "for whom" is put aside once again. Economists are only now realizing the full extent to which the communications revolution has affected the world economy. Information technology allows the extension of trade across geographical and industrial boundaries, and transnational corporations take full advantage of it. Terms of trade, exchange and interest rates and money movements are more important than the production of goods. The electronic economy made possible by information technology allows the haves to increase their control on global markets--with destructive impact on the have-nots. For them the result is instability. Developing countries which rely on the production of a small range of goods for export are made to feel like small parts in the international economic machine. As "futures" are traded on computer screens, developing countries simply have less and less control of their destinies. So what are the options for regaining control One alternative is for developing countries to buy the latest computers and telecommunications themselves—so-called "development communications" modernization. Yet this leads to long-term dependency and perhaps permanent constraints on developing countries’ economies. Communications technology is generally exported from the U. S., Europe or Japan; the patents, skills and ability to manufacture remain in the hands of a few industrialized countries. It is also expensive, and imported products and services must therefore be bought on credit--credit usually provided by the very countries whose companies stand to gain. Furthermore. when new technology is introduced there is often too low a level of expertise to exploit it for native development. This means that while local elites, foreign communities and subsidiaries of transnational corporations may benefit, those whose lives depend on access to the information denied it. |
From the passage we know that the development of high technology is mostly in the interests of ______.
A．the world economy
B．the rich countries
C．scientific development
D．the elite