某大型顶进箱涵工程为三孔箱涵,箱涵总跨度22m,高5m,总长度33.66m,均分三节

题型:问答题 案例分析题

问题:

某大型顶进箱涵工程为三孔箱涵,箱涵总跨度22m,高5m,总长度33.66m,均分三节,需穿越5条既有铁路站场线;采用钢板桩后背,箱涵前设钢刃脚,箱涵顶板上表面位于地面下0.6m,箱涵穿越处有一条自来水管需保护。地下水位于地面下3m。箱涵预制工作坑土质为亚黏土,采用放坡开挖和轻型井点降水。

项目部编制了轨道加固方案,采用轨束梁加固线路,以保障列车按正常速度行驶;制定了顶进时对桥(涵)体各部位的测量监控方案,经项目部技术负责人批准后实施。

按原进度计划,箱涵顶进在雨期前施工完成。开工后,由于工作坑施工缓慢,进度严重拖后。预制箱涵达到设计强度并已完成现场线路加固后,顶进施工已进入雨期。项目部加强了降排水工作后开始顶进施工。为抢进度保工期,采用轮式装载机直接开入箱涵孔内铲挖开挖面土体,控制开挖面坡度为1:0.65,钢刃脚进土50ram根据土质确定挖土进尺为0.5m,并且在列车运行过程中连续顶进。

箱涵顶进接近正常运营的第一条线路时,遇一场大雨。第二天,正在进行顶进施工时,开挖面坍塌,造成了安全事故。

结合项目部进度控制中的问题指出应采取的控制措施。

考点:市政公用工程(二建)市政公用工程综合练习市政公用工程综合练习题库
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EDI就是按照商定的协议,将商业文件分类,并通过计算机网络,在贸易伙伴的计算机网络系统之间进行数据交换和自动处理。

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聚丙烯酰胺(PAM)常作为不分散低固相钻井液的()剂。

A、絮凝

B、降滤失

C、稀释

D、乳化

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Gardens of Claude Monet in Giverny Flowers, color, and light are essential elements in interior decorating. And nowhere are these more evident than in the home and gardens of Claude Monet in Giverny, France. Filled with the bright, clear colors of nature, this home is a must-see for anyone who loves art, flowers, color, or decorating. It is especially remarkable because the usual decorating of the day included heavy curtains, large velvet upholstered pieces, and dark, somber interiors. Monet broke from that tradition when he moved here in 1883, enchanted by the quiet village of Vernon, rolling country hills, pretty trees and fields all laid out gracefully along the banks of the Este River. Monet was still a struggling artist when he arrived in Giverny. It was one of his paintings that had given this new arts movement its name-"Impressionism"-for the use of dabs of color on canvas, rather than sweeping brushstrokes or more classic painstaking detail. While at first reviled by critics impressionism began to grow in popularity and buy 1890 Monet’s art was selling well enough that he could afford to purchase his rented home for the price of 22,000 francs, equal to the price of just two or three of his paintings. He stayed in this home for the rest of his life, until 1926. Monet’s love of pure color is fully expressed in the decoration of his home. Outside, bright pink stucco walls contrast with forest green shutters. Inside, brilliant yellow hues brighten the dining room while lovely watery blues and greens grace the entry. In the kitchen two tones of blue burst into a riot of color, highlighted with copper pots and blue and white tiles from Rouen. On display in the dining room is the matching yellow china wares filled with a collection of blue and white china pieces as well as the yellow and blue banded dinnerware he had commissioned in his own design. In the center, a large table is set for the family and guests. A pretty fireplace at the end of the room shows off blue and white tiles under a mantle decorated simply with an arrangement of bottle green vases. Japanese prints cover the walls. The home is one room deep and about five rooms wide, each with windows overlooking the magnificent gardens where great care was taken in the planning and planting. Monet eventually expanded his land to include a small stream, pond, and water lily gardens on an adjacent properly. At one point he employed a staff of six gardeners to care for the grounds and keep the gar-dens supplied with flowering blooms. It is the gardens that seem to be the focal point of the home. Laid out in neat rows, with paths, archways, and color, Monet oversaw every de- tail. Strolling through them, one almost expects to come upon the scene of Monet paining, his wife and a child in front of his magnificent rose garden. Join us for a beautiful photo tour of Monet’s gardens.

In paragraph 4, the first line, the phrase "china wares" means ______.

A.wares made of China

B.wares made in China

C.wares made by Chinese people

D.wares made in Chinese designs

题型:问答题 案例分析题

某地食堂一次午饭后,造成40人食物中毒,主要是吃了前一天剩余的猪肉包子,一个半小时后,工人不断出现不良反映,经医院检查为集体食物中毒。请判断下列事故原因分析的对错。

做饭人员无证上岗。

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外汇储备数据显示,截至2009年末,中国国家外汇储备余额为23992亿美元,同比增长23.28%。2009年全年国家外汇储备共增加4531亿美元,其中第四季度新增1266亿美元,前三季的增量分别为77亿美元、1779亿美元和1510亿美元。
分析人士认为,由于2009年外汇储备新增额度远高于当期外贸顺差和外商直接投资之和,因此外汇储备中不可解释的短期资本流入超过1600亿美元。即便刨除美元对其他揽子货币贬值因素和外汇储备投资收益,中国2009年新增外汇储备中无法解释的短期资本流入也将在千亿美元左右。
根据上述资料,回答下列问题。

由于欧元是一种跨主权国家的信用货币,( )依然是其一个内在的缺陷。

A.没有国家作为信用基础

B.没有黄金作为信用基础

C.货币政策与财政政策的分离

D.没有国内的中央银行负债发行货币

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