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房建工程其主体建筑为8层现浇钢筋混凝土框架结构。在主体工程施工到第二层时,该层的钢筋混凝土柱已浇筑完成。拆模后监理工程师发现,柱混凝土外观质量不良,表面酥松麻面,怀疑其混凝上强度不够,设计要求柱混凝土抗压强度达到C25的等级。于是,监理工程师要求施工单位出示对该柱子施工时混凝土抽样检验和试验结果。试验结果表明,柱混凝土抗压强度值(28天强度)全部达到或超过C25的设计要求,其中最大值达到C30等级。 如果查明该混凝土质量事故是由于业主提供的水泥质量问题导致的混凝土强度不足,而且在业主采购及向施工单位提供这批水泥时均未向监理单位咨询和提供有关信息。监理单位与施工单位都按规定对业主提供的材料进行了进货抽样检验,并根据检验结果确认其合格而接受。请问在此情况下,业主及监理单位应承担什么责任?

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某市政府投资建设的公共图书馆工程被列入省级重点工程建设项目,招标人决定对工程施工进行邀请招标。本市的A、B、C、D、E五家施工单位参加投标,外省的F和G两家施工单位组成联合体参加投标。招标人委托咨询单位针对本市和外省企业分别编制了两个标底,用于对本市和外省施工企业投标价的评定。招标人于2004年6月1日向资格预审合格的A、B、C、D、E五家施工单位及F和G两家施工单位组成的联合体发出投标邀请书,规定6月15日~6月16日发放招标文件,6月25日上午9时为投标截止时间。上述单位均接受邀请并按期购买招标文件。6月21日招标人对投标单位就招标文件质疑作了书面答复,随后组织各投标单位现场踏勘。6月25日上述投标单位均按规定的时间提交了投标文件。投标单位A提前一天递交了投标文件,但在投标截止时间前半小时又递交了一份补充文件,对投标报价进行了修改,将投标总价降低30万元,并说明以此报价为准。6月26日上午9时进行开标,由市建委标办领导主持开标工作,招标人检查投标文件的密封情况,确认无误后,由工作人员当众拆封。评标委员会委员由招标人直接确定,共由7人组成,其中招标人代表2人,标办领导1人,技术、经济专家4人。评标委员会认为A单位提交了两份投标文件宣布为废标。招标人根据评标委员会推荐,于2006年8月1日向C单位发出中标通知书,C单位于2006年8月5日收到。经双方协商,报价再降50万元后,双方于2006年9月4日签订了建设工程施工承包合同。 招标人对投标单位进行资格预审应包括哪些内容?

代谢障碍而引起白化病的氨基酸是属于

A. 酸性氨基酸
B. 碱性氨基酸
C. 芳香族氨基酸
D. 含硫氨基酸
E. 支链氨基酸

Tomorrow evening about 20 million Americans will be shown, on their television screens, how easy it is to steal plutonium and produce "the most terrifying blackmail weapon ever devised"-a home-made atomic bomb. They will be told that no commercial nuclear plant in the United States - and probably in the World-is adequately protected against a well planned armed attack by terrorists, and that there is enough information on public record to guide a nuclear thief not only to the vaults of nuclear plants where plutonium is stored, but also to tell him how the doors of those vaults are designed. The hour-long television programme, "The Plutonium Connection", makes its point by showing how a 20-year-old student of the Massachusetts Institute of Technology in five weeks designed an atomic bomb composed of plutonium and parts from a hardware store. The young man, whose identity is being kept secret for fear he may be kidnapped by terrorists; is quoted as saying: "’I was pretty surprised about how easy it is to design a bomb. When I was working on my design, I kept thinking there’s got to be more to it than this, but actually there isn’t. It’ s simple." The student worked alone, using information he obtained from science libraries open to the public. The television programmes, produced for non-commercial stations across the country by a Boston educational station, shows how quantities of other "secret" information are available to anyone. The Atomic Energy Commission’s public reading room in Washington is described by the narrator as "the first place a bomb-designer would visit when he was planning his plutonium theft. On file there and freely available are the plans of every civilian nuclear installation in the country." The programme seems certain to create enormous controversy - not only. over the lack of nuclear safeguards, but also over the morality of commissioning the student to design a bomb and the wisdom of drawing attention to the ways that a nuclear thief can work. Even an Official of Public Broadcasting System, which is distributing the TV programmes, confessed to qualms: "It’s a terribly important subject, and people should know about the dangers, but I can’t help wondering if the programme won’t give someone ideas." "The Plutonium Connection" explains, for example, that the security system of nuclear plants were all designed to prevent sabotage by perhaps one or two agents of some foreign Power. But now this appears less of a hazard than the possibilities of an attack by an armed band of terrorists with dedicated disregard for their own lives. The programme discusses two major plutonium reprocessing plants in the US one already operating in Oklahoma, one being completed in South Carolina - neither of which has more than a handful of armed guards to supplement the alarms, fences and gun-detectors that Government security requires. Both are in such remote areas that it would take at least 45 minutes for a sizable police force to be assembles, if there were an attack. An official of the South Carolina plant - a joint operation of Allied Chemical, Gulf Oil and Royal Dutch Shell - admits to television viewers that the "system we’ve designed would probably not prevent" a band of about 12 armed terrorists from entering. Pilfering plutonium is even easier, the programme suggests. Despite constant inventories, there are inevitably particles of plutonium unaccounted for about 1 1b. a month at the Oklahoma plant, owned by the Kerr-McGee oil company, which in a year adds up to enough to make an atomic bomb. It is suggested that pilfering would be even easier if instrument technicians were unscrupulous enough to alter their measuring devices. The television film also shows radioactive fuel being transported to nuclear processing plants in commercial armoured cars. As a safety measure, US drivers of such cars are ordered to contact headquarters by radio telephone every two hours. But the equipment is "cumbersome and unreliable", and in difficult terrain there are radio blackout areas. The programme ends with a warning from Dr. Theodore Taylor, a former Atomic Energy Commission officer who has long contended that any person of modest technical ability could make an atomic bomb: "If we don’t get this problem under international control within the next five or six years, there is a good chance that it will be permanently out of control.\ What information will NOT be included in tomorrow’s TV programme

A. How the student has designed the atomic bomb.
B. How technicians are bribed by some foreign Power.
C. How one can get the necessary information about making atomic bombs in public reading rooms.
D. How radioactive fuel is transported to nuclear processing plants.

先天性心脏病有蹲踞、发绀现象的是

A. 动脉导管未闭
B. 房间隔缺损
C. 肺动脉狭窄
D. 法洛四联症
E. 室间隔缺损

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