题目内容
甲、乙、丙三个化肥厂生产尿素的原料不同，但生产流程相同。 原料→(CO、H2)→(CO2、NH3)→CO(NH2)2 试回答下列问题： (1)用化学方程式表示甲、乙、丙三个化肥厂合成尿素的原料气的生产过程。 ①甲厂以焦炭、空气和水为原料； ②乙厂以天然气、空气和水为原料； ③丙厂以石脑油(主要成分为C5H12)、空气和水为原料。 (2)按照工业有关规定，利用基本原料所制得的原料气H2和CO2的物质的量之比，若最接近合成尿素的原料气NH3(换算为H2的物质的量)和CO2的物质的量之比，则原料的利用率最高，据此判断甲、乙、丙三个工厂哪个工厂对原料的利用率最高？
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Passage One The beat generation mainly referred to the youth who were born and brought up around the Second World War. They showed their disdain (蔑视，轻视) for almost everything traditional, such as government authority, respect for parents, one’s duty, moral standards, and traditional customs. They developed a kind of absolute individualism and liberty. They preferred long hair, mini dresses or close fitting clothes to show off the figure. They advocated freedom of sex and cohabitation (同居). Their influence could be seen from the fact that about one third of the American couples living together were not married by law. And the divorce rate was very high. The endless US wars abroad and sharp class straggle at home caused many American youths to develop a kind of cynicism. They doubted the existing social system, possibility of harmonious (和谐的) human relations, and the long honored standard for correct behavior. They felt society overlooked their needs. Therefore, they refused to do any duty that was required of them by society. They declared "Don’t believe anyone over thirty." All this came from the sick society. It’s wrong to imagine they all fought against capitalism in support of revolutionary things. Some of their ideas were even more decadent (颓废的) and impractical. It was an abnormal phenomenon in an abnormal society. Which of the following is TRUE according to the passage
某重型机械设备厂为在国内外市场提高竞争能力，提出了加强产品质量控制和质量检验的一系列具体措施。其中最根本最重要一项是提高人员的素质。尤其是对质量检验和质量管理相关人员进行有关质量管理知识和技能的再培训。经学习大家对质量检验的概念、预防能力和检验人员的职责等问题加深了认识。现回答以下问题： 经学习讨论，大家对质量检验错误的理解有了正确判断，对质量检验理解错误的是 ( )。
Passage Four The comprehension passages on this course are designed to help you increase your speed. A higher reading rate, with no loss of comprehension, will help you in other subjects as well as English, and the general principles apply to any language. Naturally, you will read every book at the same speed. You would expect to read a newspaper, fox example, much more rapidly than a physics or economics textbook but you can raise your average reading speed over the whole range of materials you wish to cover so that the percentage gain will be the same whatever kind of reading you are concerned with. The reading passages which follow are all of an average level of difficulty for your stage of instruction. If you get to the point where you can read books of average difficulty at between 40 and 50 w.p.m. with 70% or more comprehension, you will be doing quite well, though of course any further improvement of speed with comprehension will be a good thing. When you practise reading with passages shorter than book length, do not try to take in each word separately, one after the other. It is much more difficult to grasp the broad theme of the passage this way, and you will also get stuck on individual words which may not be absolutely essential to a general understanding of the passage. It is a good idea to skim through the passage very quickly first (say 500 words in a minute or so) to get the general idea of each paragraph. Titles, paragraph headings and emphasized words (underlined or in italics) can be a great help in getting this skeleton outline of the passage. To do the most effective reading, you should ______.
某公安机关在办理一起盗窃案件的过程当中，委托价格鉴证机构对被盗电缆进行价格鉴证，电缆规格为HYA400×0.4×2型铜芯电缆，长度为72米，安装时间为2004年6月2日，鉴证基准日为2010年4月5日。经调查三家电缆厂该型号电缆销售价格，鉴证标的物于基准日市场平均销售价格为78元/米，每米HYA400×0.4×2型铜芯电缆出铜1.6斤，鉴证基准日废铜回收价格为30元/斤。设电缆的使用年限为10年，价格鉴证采用年限折旧法，计算价格鉴证标的物的价值。
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