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對(duì)外貿(mào)易微觀經(jīng)濟(jì)效益和宏觀經(jīng)濟(jì)效益的含義是什么?

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對(duì)外貿(mào)易經(jīng)濟(jì)效益可以從不同層次進(jìn)行分析、研究。從不同經(jīng)濟(jì)層次看,外貿(mào)經(jīng)濟(jì)效益包括外貿(mào)微觀經(jīng)濟(jì)效益,就是通過外貿(mào)的活動(dòng),外貿(mào)部門和企業(yè)取得的盈利,即對(duì)外貿(mào)部門和企業(yè)經(jīng)營效果的評(píng)價(jià),這也是外貿(mào)直接經(jīng)濟(jì)效益,外貿(mào)宏觀經(jīng)濟(jì)效益,則是通過外貿(mào)活動(dòng)對(duì)整個(gè)國民經(jīng)濟(jì)產(chǎn)生的全面經(jīng)濟(jì)效益,即對(duì)于外貿(mào)對(duì)整個(gè)國民經(jīng)濟(jì)所起作用的全面評(píng)價(jià),這也可以說是外貿(mào)的間接經(jīng)濟(jì)效益,在考慮外貿(mào)宏觀經(jīng)濟(jì)效益時(shí),要將價(jià)值與使用價(jià)值結(jié)合起來考慮,不可偏廢任何一方

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1. A European spacecraft took off today to spearhead the search for another "Earth" among the stars. 2. The Corot space telescope blasted off aboard a Russian Soyuz rocket from the Baikonur cosmodrome in Kazakhstan shortly after 2.20pm. 3. Corot, short for convection rotation and planetary transits, is the first instrument capable of finding small rocky planets beyond the solar system. Any such planet situated in the right orbit stands a good chance of having liquid water on its surface, and quite possibly life, although a leading scientist involved in the project said it was unlikely to find "any little green men". 4. Developed by the French space agency, CNES, and partnered by the European Space Agency (ESA), Austria, Belgium, Germany, Brazil and Spain, Corot will monitor around 120,000 stars with its 27cm telescope from a polar orbit 514 miles above the Earth. Over two and a half years, it will focus on five to six different areas of the sky, measuring the brightness of about 10,000 stars every 512 seconds. 5. "At the present moment we are hoping to find out more about the nature of planets around stars which are potential habitats. We are looking at habitable planets, not inhabited planets. We are not going to find any little green men," Professor Ian Roxburgh, an ESA scientist who has been involved with Corot since its inception, told the BBC Radio 4 Today programme. 6. Prof Roxburgh said it was hoped Corot would find "rocky planets that could develop an atmosphere and, if they are the right distance from their parent star, they could have water". 7. To search for planets, the telescope will look for the dimming of starlight caused when an object passes in front of a star, known as a "transit". Although it will take more sophisticated space telescopes planned in the next 10 years to confirm the presence of an Earth-like planet with oxygen and liquid water, Corot will let scientists know where to point their lenses. 8. Measurements of minute changes in brightness will enable scientists to detect giant Jupiter-like gas planets as well as small rocky ones. It is the rocky planets - that could be no bigger than about twice the size of the Earth - which will cause the most excitement. Scientists expect to find between 10 and 40 of these smaller planets. 9. Corot will also probe into stellar interiors by studying the acoustic waves that ripple across the surface of stars, a technique called "asteroseismology". 10. The nature of the ripples allows astronomers to calculate a star’s precise mass, age and chemical composition. 11. "A planet passing in front of a star can be detected by the fall in light from that star. 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With the launching of Darwin, astronomers will be able to analyse whether those rocky planets have 13. __________ for life.
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