场景(六)某公共建筑,主楼采用钢筋混凝土结构,辅楼采用钢结构。项目经理进场后,立即组织临建搭设。土方施工中加强了质量控制。地质报告显示地下水水位高于槽底标高。根据场景(六),作答下列题目: 施工中用于测量两点间水平夹角的常用仪器有()。
A. 水准仪
B. 经纬仪
C. 测距仪
D. 全站仪
E. 铅垂仪
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场景(六)某公共建筑,主楼采用钢筋混凝土结构,辅楼采用钢结构。项目经理进场后,立即组织临建搭设。土方施工中加强了质量控制。地质报告显示地下水水位高于槽底标高。根据场景(六),作答下列题目: 钢筋混凝土结构的优点是()。
A. 钢筋 和混凝土两种材料的强度都能充分利用
B. 拆修方便
C. 抗裂性能好
D. 可模性好,适用面广
E. 模板用料少,费工少
案例分析题某机电设备安装公司承包了一台带换热段的分离塔和附属容器、工艺管道的安装工程。合同约定,分离塔由安装公司制造或订货,建设单位提供制造图样。由于该塔属压力容器,安装公司不具备压力容器制造和现场组焊资格,故向某具备资格的容器制造厂订货。安装公司为了抢工期,未办理任何手续,在分离塔运抵现场卸车后,直接就吊装就位,并进行后续的配管工程。在工程实施过程中,出现了以下事件:事件1:管道系统压力试验中,塔进、出口管道上的多个阀门发生泄漏。检查施工记录,该批由建设单位供货的阀门在安装前未进行试验。安装公司拆卸阀门并处理完后重新试压合格,工期比原计划延误6d。安装单位就工期延误造成的损失向建设单位索赔,遭到建设单位拒绝。事件2:在联动试运行中,分离塔换热段管板与接管连接的多处焊缝泄漏,试运行中止。安装单位对塔泄漏处进行了补焊处理后,再次启动试运行,而塔的原漏点泄漏更加严重,不得不再次停止试运行。分析事故原因,确定是由分离塔质量问题引起,但未查到分离塔的出厂质量证明文件和现场交接记录。由于分离塔待修停工,使该项目推迟竣工投产2个月。为此,建设单位要求安装单位承担质量责任并赔偿全部经济损失。问题 在事件2中,安装单位和容器制造厂的质量职责是什么?对事故各自应负什么质量和经济责任?说明理由。
Sharks Perform a Service for Earth’s Waters It is hard to get people to think of sharks as anything but a deadly enemy. They are thought to (51) people frequently. Although these fish perform a valuable (52) for earth’s waters and for human beings, business and sport fishing are threatening their (53) . As a result, some sharks are at risk of disappearing from Earth. Warm weather may influence both fish and shark (54) . Many fish swim near coastal areas because of their (55) waters. Experts say sharks may follow the fish into the same areas, (56) people also swim. In fact, most sharks do not purposely charge at or bite humans. They are thought to mistake a person (57) a sea animal, such as a seal (海豹) or sea lion. That is why people should not swim in the ocean when the sun goes down or comes up, because those are the times when sharks are looking for (58) . Experts also say that bright colors and shiny jewelry (珠宝) may cause sharks to attack. A shark has an extremely ’good sense of (59) , with which it can find small amounts of substances in water, such as blood, body liquids and chemicals (60) by animals. These powerful senses help sharks find their food. Sharks eat fish, any (61) sharks, and plants that live in the ocean. Medical researchers want to learn more about the shark’s body defense and immune (免疫的) (62) against disease. Researchers know that sharks (63) quickly from injuries. They study the shark in hopes of finding a way to fight human disease. Sharks are important for the world’s oceans, as they eat injured and diseased fish. Their (64) activities mean that the numbers of other fish in ocean waters do not become too (65) . This protects the plants and other forms of life that exist in the oceans.
A. fresh
B. soft
C. warm
D. deep
案例分析题某东北管道加压泵站扩建,新增两台离心式增压泵。两台增压泵安装属该扩建工程的机械设备安装分部工程。泵安装前,班组领取了安装垫铁,未仔细检查,将其用于泵的安装。隐蔽前专检人员发现,有三组垫铁的规格和精度不符合要求,责成施工班组将此三组垫铁换为合格垫铁。在设备配管过程中,项目经理安排了4名持有压力管道手工电弧焊合格证的焊工(已中断焊接工作165天)充实到配管作业中,加快了管线配管进度。经过80天的努力,机组于12月中旬顺利完成单机试运行。单机试运行结束后,项目经理安排人员完成了卸压、卸荷、管线复位、润滑油清洁度检查、更换了润滑油过滤器滤芯、整理试运行记录。随后项目经理安排相关人员进行竣工资料整理。整理完的施工记录资料有:设计变更单、定位放线记录、工程分项使用功能检测记录。项目部对竣工资料进行了初审,认为资料需补充完善。问题 指出施工记录资料中的不完善部分?