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在业务的承接和保持进行调查和评估时，下列人员不应参加评估______。
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阅读巴金的《爱尔克的灯光》中的一段文字，然后回答问题。“长宜子孙”，我恨不能削去这四个字! 许多可爱的年轻生命被摧残了，许多有为的年轻心灵被囚禁了。许多人在这个小圈子里面憔悴地捱着日子。这就是“家”!“甜蜜的家”! 这不是我应该来的地方。爱尔克的灯光不会把我引到这里来的。 从这里可以看出文章的中心思想是什么
Nuclear fission is the splitting of the nucleus of an atom. Only a few elements are suitable for use in this way, the most important ones being Uranium-235, Uranium-233, and Plutonium-239. When a nucleus of one of these elements is struck by a free neutron it breaks down into two lighter nuclei which fly apart at high speed, colliding with surrounding atoms. Their kinetic energy is converted into heat energy. At the same time, two or three free neutrons are released and one of them enters the nucleus of a neighbouring atom, causing fission to occur again; and so on. The reaction spreads very quickly, with more and more heat energy released. This is called a "chain" reaction because the splitting of each nucleus is linked to another, and another and another. If this reaction takes place in an atomic bomb, where nothing is done to slow it down, the result is a violent explosion that can destroy a town in a few seconds. Fission can also, however, take place within a construction called a nuclear reactor, or atomic pile. Here the highly fissile material (U-235, U-233, Pu-239) is surrounded by a substance that is non-fissile, for instance graphite. This material is called a moderator. The neutrons lose some of their energy and speed through colliding with the atoms of the moderator. Energy—heat energy—is still created on an enormous scale, but no expansion takes place. The moderator has another function: by slowing down the speed of the free neutrons, it makes it more likely that one of them will collide with the nucleus of a neighbouring atom to continue the chain reaction. The chief advantage of nuclear energy is that it does not depend on any local factors. A nuclear reactor, unlike an oil-well or a coalmine, does not have to be sited on top of a fossil-fuel source; unlike the solar energy unit, it does not have to go out of production when the sun is not shining; unlike hydro-electric power, it does not depend on a large flow of water which may be reduced during some seasons of the year. With an atomic power station, the only limiting factor is that of safety. In the opposite process, nuclear fusion, two nuclei come together, to form a new nucleus of a different kind and this process also releases energy on an enormous scale. Fusion can only occur under conditions of very great heat—at least 50,000,000 degrees Celsius. (The temperature at the centre of the sun is estimated as 130,000,000 degrees Celsius.) A fusion reaction on earth has already been created—the hydrogen bomb. This is an uncontrolled reaction. It is not yet possible to produce a controlled fusion reaction that can be used for the production of useful energy. Nuclear energy can be thought of as a kind of square, three of the quarters of the square are known and used, but the fourth cannot yet be used. In nuclear fusion, two nuclei come together and ______.
阅读陶渊明《饮酒》(其五)，然后回答问题。结庐在人境，而无车马喧。 问君何能尔 心远地自偏。 采菊东篱下，悠然见南山。 山气日夕佳，飞鸟相与还。 此中有真意，欲辩已忘言。 这首诗的主题是什么
阅读王安石的《读孟尝君传》，然后回答问题。世皆称孟尝君能得士，士以故归之，而卒赖其力以脱于虎豹之秦。嗟乎! 孟尝君特鸡鸣狗盗之雄耳，岂足以言得士 不然，擅齐之强，得一士焉，宜可以南面而制秦，尚何取鸡鸣狗盗之力哉 夫鸡鸣狗盗之出其门，此士之所以不至也。 这篇文章属于立论还是驳论
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