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使被摄对象产生明亮边缘的光线，可以使被摄主体与环境区分开来，突出主体，这是以下哪种造型光。
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男，13岁，2周来面部及下肢浮肿，尿量减少，1天来神萎，四肢厥冷，来院急诊，血压8／5.3kPa(60／40mmHg)，心率120次／分，腹水症()，尿蛋白()，血浆蛋白15g/L，肌酐清除率50ml／min，应考虑下列哪项诊断
The world is going through the biggest wave of mergers and acquisitions never witnessed. The process sweeps from hyperactive America to Europe and reaches the emerging countries with unsurpassed might. Many in these countries are looking at this process and worrying: "Wont the wave of business concentration turn into an uncontrollable anti-competitive force？" Theres no question that the big are getting bigger and more powerful. Multinational corporations accounted for less than 20% of international trade in 1982. Today the figure is more than 25% and growing rapidly. International affiliates account for a fast-growing segment of production in economies that open up and welcome foreign investment. In Argentina, for instance, after the reforms of the early 1990s, multinationals went from 43% to almost 70% of the industrial production of the 200 largest firms. This phenomenon has created serious concerns over the role of smaller economic firms, of national businessmen and over the ultimate stability of the world economy. I believe that the most important forces behind the massive M&A wave are the same that underlie the globalization process: falling transportation and communication costs, lower trade and investment barriers and enlarged markets that require enlarged operations capable of meeting customers demands. All these are beneficial, not detrimental, to consumers. As productivity grows, the worlds wealth increases. Examples of benefits or costs of the current concentration wave are scanty. Yet it is hard to imagine that the merger of a few oil firms today could recreate the same threats to competition that were feared nearly a century ago in the U.S., when the Standard Oil trust was broken up. The mergers of telecom companies, such as WorldCom, hardly seem to bring higher prices for consumers or a reduction in the pace of technical progress. On the contrary, the price of communications is coming down fast. In cars, too, concentration is increasing — witness Daimler and Chrysler, Renault and Nissan — but it does not appear that consumers are being hurt. Yet the fact remains that the merger movement must be watched a few weeks ago, Alan Greenspan warned against the megamergers in the banking industry. Who is going to supervise, regulate and operate as lender of last resort with the gigantic banks that are being created？ Wont multinationals shift production from one place to another when a nation gets too strict about infringements to fair competition？ And should one country take upon itself the role of "defending competition" on issues that affect many other nations, as in the U.S. vs. Microsoft case？
What is the typical trend of businesses today？
常用于血清除菌的是
慢性支气管炎并肺气肿不可能出现的体征是
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