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国际标准录音制品编码的英文缩写为（ ）。
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The energy contained in rock within the earth"s crust represents a nearly unlimited energy source, but until recently commercial retrieval has been limited to underground hot water and/or steam recovery systems. These systems have been developed in areas of recent volcanic activity, where high rates of heat flow cause visible eruption of water in the form of geysers and hot springs. In other areas, however, hot rock also exists near the surface but there is insufficient water present to produce eruptive phenomena. Thus a potential hot dry rock (HDR) reservoir exists whenever the amount of spontaneously produced geothermal fluid has been judged inadequate for existing commercial systems.As a result of recent energy crisis, new concepts for creating HDR recovery systems—which involve drilling holes and connecting them to artificial reservoirs placed deep within the crest—are being developed. In all attempts to retrieve energy from HDRs, artificial stimulation will be required to create either sufficient permeability or bounded flow paths to facilitate the removal of heat by circulation of a fluid over the surface of the rock.The HDR resource base is generally defined to include crustal rock that is hotter than 150℃, is at depths less than ten kilometers, and can be drilled with presently available equipment. Although wells deeper than ten kilometers are technically feasible, prevailing economic factors will obviously determine the commercial feasibility of wells at such depths. Rock temperatures as low as 100℃ may be useful for space heating; however, for producing electricity, temperatures greater than 200℃ are desirable. The geothermal gradient, which specifically determines the depth of drilling required to reach a desired temperature, is a major factor in the recoverability of geothermal resources. Temperature gradient maps generated from oil and gas well temperature-depth records kept by the American Association of Petroleum Geologists suggest that tappable high-temperature gradients are distributed all across the United States. (There are many areas, however, for which no temperature gradient records exist.)Indications are that the HDR resource base is very large. If an average geothermal temperature gradient of 22℃ per kilometer of depth is used, a staggering 13,000,000 quadrillion B.T.U. "s of total energy are calculated to be contained in crustal rock to a ten-kilometer depth in the United States. If we conservatively estimate that only about 0.2 percent is recoverable, we find a total of all the coal remaining in the United States. The remaining problem is to balance the economics of deeper, hotter, more costly wells and shallower, cooler, less expensive wells against the value of the final product, electricity and/or heat. The primary purpose of the passage is to ______.
80.本题包括三道分题，其中A分题有关图书出版，B分题有关期刊出版，C分题有关数字出版。请任选一道分题作答。如果作答不止一道，将按排列在前的分题计分。（本题20分） 80-B. 简答题：根据所给材料回答问题。《四轮驱动》期刊为公开发行的汽车消费类月刊，广告业务实行自营。2013年10月，在该期刊记者站的操办下，驻地汽车生产企业M公司与期刊社签订了广告投放意向书，主要内容是“买下《四轮驱动》期刊2014年全年的底封广告位，每个广告位的价格为22万元”。M公司提出：“你有多少底封，我就上多少期广告。”《四轮驱动》期刊社立即责成广告部与M公司商谈相关操作方案，力求收益最大化。广告部认为，正刊的底封每年总量固定，要想增加，可以考虑在2014年年底前分别出版精选本、精华本和珍藏本，这样就会多出3个底封广告位。M公司对此表示认可，同意对精选本、精华本和珍藏本的底封也按同等价位投放广告。在双方合作期间，为了增进与客户的友好关系，《四轮驱动》期刊广告部人员在M公司配合下，撰写了《M汽车安全技术世界领先》的新闻报道，着力介绍M公司一些新技术的特点。设计版式时，技术编辑应广告部要求，为凸显视觉冲击力而对该文全部采用黑体字。文章很快就刊登在当月的《四轮驱动》期刊上。M公司非常满意这种合作关系，决定增加广告投放量，遂又买下期刊下一期的封二广告位。封二广告由M公司制作，主要画面是我国某位国家领导人视察该企业的照片。经期刊社核实，该领导人确实曾视察该企业并对其发展思路给予肯定。于是，期刊社刊登了该广告。2014年8月，《四轮驱动》期刊社被出版行政主管部门和工商行政管理部门查处。问题一： 广告部所提2014年中出版精选本、精华本和珍藏本，以获得额外3个底封广告位的建议是否妥当？为什么？问题二： 工商行政管理部门为什么查处《四轮驱动》期刊？问题三： 《四轮驱动》期刊在记者站管理、文稿采编、广告刊登和排版设计等业务上有哪些违规或不妥之处？
80.本题包括三道分题，其中A分题有关图书出版，B分题有关期刊出版，C分题有关数字出版。请任选一道分题作答。如果作答不止一道，将按排列在前的分题计分。（本题20分） 80-C. 写作题：根据所给材料撰写数字出版产品策划报告。A出版社的电子技术类图书在相关领域科技人员、教师和学生中具有较高的品牌影响力和市场占有率。随着近几年来各出版单位纷纷推出类似产品，市场竞争日益激烈。为继续保持在该出版领域的领先地位，Ａ出版社领导决定利用本社积累的大量已有资源，开发、制作将1 000种电子技术类图书集成在一起的在线数据库产品，主要面向大学、科研机构、图书馆等集体用户和相关专业的个人用户。同时，本次开发、制作工作要考虑到使数字资源具备“一次加工，多元发布”的功能，为今后的进一步深度开发、全面提高产品价值打好必要的基础。 请根据上述材料，按数字出版产品策划报告的要求撰写一份数据库产品策划报告。
图书的必备结构部件包括（ ）等。
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