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危险废物贮存是指危险废物再利用或无害化处理和最终处置前的存放行为。根据《国务院关于全国危险废物和医疗废物处置设施建设规划的批复》，到2006年，在全国各省及部分市、地区将建成30多个危险废物集中处置中心和300多个医疗废物集中处置中心。这些集中处置中心都附设了集中贮存设施。某地建设一危险废物集中处置中心，处置中心附设了集中贮存设施，贮存设施周边有一居民区和一地表水域，贮存设施基础防渗层为2m厚黏土层。贮存设施选址地质结构稳定，地震裂度不超过7度的区域。 根据以上内容，回答以下问题。 危险废物贮存设施基础防渗层为2m厚黏土层，则该黏土层的渗透系数应为多少如果防渗层为2mm厚高密度聚乙烯，其渗透系数又应为多少
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危险废物贮存是指危险废物再利用或无害化处理和最终处置前的存放行为。根据《国务院关于全国危险废物和医疗废物处置设施建设规划的批复》，到2006年，在全国各省及部分市、地区将建成30多个危险废物集中处置中心和300多个医疗废物集中处置中心。这些集中处置中心都附设了集中贮存设施。某地建设一危险废物集中处置中心，处置中心附设了集中贮存设施，贮存设施周边有一居民区和一地表水域，贮存设施基础防渗层为2m厚黏土层。贮存设施选址地质结构稳定，地震裂度不超过7度的区域。 根据以上内容，回答以下问题。 若所贮存的危险废物为医院产生的临床废物，写出相关规定。
铁路建设项目，拟建线路总长为150km，全程有桥梁共59座，隧道50座，车站10座。沿线所经地貌主要有河谷阶地、丘陵、低山三种，所经地区属剥蚀成因类型。沿线水系有长江支流。沿线不良地质主要有错落、崩塌、人为坑洞及顺层、软质岩路堑边坡风化剥落、落石等，特殊岩土主要有软土、膨胀土等，另外还有天然气、煤层瓦斯等有害气体；岩溶、隧道涌水有可能减少或疏干地表水或造成地下水位下降从而引起环境工程地质问题。工程所处地区属亚热带湿润季风气候区。温暖湿润，雨量充沛，常年多北风、东北风、西北风，沿线矿产资源品种较多，以非金属矿为主。该线路采用跨越长江支流方案，且铁路线两侧分布有少量居民区和小学、医院等设施。 根据以上内容。回答以下问题。 沿途车站生活污水若处理后排入Ⅲ类水体或农灌水体，水质需分别满足《污水综合排放标准》几级标准的要求
求由方程2x2+2y2+z2+8xz-z+8=0所确定的函数z(x，y)的极值．
In recent years, we have all watched the increasing commercialization of the campus. The numerous advertising, posters and the golden arches of fast food outlets may be an affront (侮辱) to our aesthetic sensibilities, but they are, arguably, no worse than ugly. Some of the other new features of commercialized campus life do, however, constitute a serious threat to things we rightly respect. "Privatization" and the "business model" are the potential menace. What do these notions mean To me, they involve an increased dependence on industry and charitable actions for operating the university; an increased amount of our resources being directed to applied or so-called practical subjects, both in teaching and in research; a proprietary treatment of research results, with the commercial interest in secrecy overriding the public’’s interest in free, shared knowledge; and an attempt to run the university more like a business that treats industry and students as clients and ourselves as service providers with something to sell. We pay increasing attention to the immediate needs and demands of our "customers" and, as the old saying goes, "the customer is always right". Privatization is particularly frightening from the point of view of public well-being. A researcher employed by a university-affiliated hospital in Canada, working under contract with a medicine-making company, made public her findings that a particular drug was harmful. This violated the terms of her contract, and so she was fired. Her dismissal caused a scandal, and she was subsequently restored to her previous position. The university and hospital in question are now working out something similar to tenure (终身任职)for hospital-based researchers and guidelines for contracts, so that more public exposure of privately funded research will become possible. This is a rare victory and a small step in the right direction, but the general trend is the other way. Thanks to profit-driven private funding, researchers are not only forced to keep valuable information secret, they are often contractually obliged to keep discovered dangers to public health under wraps, too. Of course, we must not be too naive about this. Governments can unwisely insist on secrecy, too, as did the British Ministry of Agriculture. Fisheries, and Food in the work they funded in connection with the bovine (迟钝的)spongiform encephalopathy epidemic(牛脑海绵体流行病). This prevented others from reviewing the relevant data and pointing out that problems were more serious than government was letting on. The researcher mentioned in the third paragraph was fired because______.
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