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Computer and School Education There was a time when parents who wanted an educational present for their children would buy a typewriter, a globe or an encyclopedia set. Now those (51) seem hopelessly old-fashioned; this Christmas, there were a lot of personal computers under the tree. (52) that computers are the key to success, parents are also financially insisting that children (53) taught to use them in school-as early as possible. The problem for schools is that when it (54) computers, parents don’t always know best. Many schools are (55) parental impatience and are purchasing hardware without sound educational planning so they can say, "OK, we’ve moved into the computer age." Teachers found themselves caught in the middle of the problem-between parent pressure and (56) educational decisions. Educators do not even agree (57) how computers should be used. (58) money is going for computerized educational materials (59) research has shown can be taught just as well with pencil and paper. (60) those who believe that all children should have access to computers, warn of potential dangers to the very young. The temptation remains strong largely because young children (61) so well to computers. First graders have been seen willing to work for two hours on math skills. Some have an attention span of 20 minutes. (62) school can afford to go into computing, and creates yet another problem: a division between the haves and have-nots. Very (63) parents are agitating (64) computer instruction in poor school districts, (65) there may be barely enough money to pay the reading teacher.

A. talks about
B. comes to
C. turns to
D. mentions

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由曲线x=ln(1+y2)与直线x=ln2所围平面图形的面积为______.

(三)某豪华酒店工程项目,18层框架混凝土结构,全现浇混凝土楼板,主体工程已全部完工,经验收合格。进入装饰装修施工阶段,该酒店的装饰装修工程由某装饰公司承揽了施工任务,装饰装修工程施工工期为150天,装饰公司在投标前已领取了全套施工图纸,该装饰装修工程采用固定总价合同,合同总价为720万元。该装饰公司在酒店装修的施工过程中采取了以下施工方法:地面镶边施工过程中,在靠墙处采用砂浆填补,在采用掺有水泥拌合料做踢脚线时,用石灰浆进行打底,木竹地面的最后一遍涂饰在裱糊工程开始前进行。对地面工程施工采用的水泥的凝结时间和强度进行复验后开始使用。在水磨石整体面层施工过程中,采用同类材料以分格条设置镶边。问 题 建设工程合同按照承包工程计价方式可划分为哪几类?

(五)某大学图书馆进行装修改造,根据施工设计和使用功能的要求,采用大量的轻质隔墙。外墙采用建筑幕墙,承揽该装修改造工程的施工单位根据《建筑装饰装修工程质量验收规范》规定,对工程细部构造施工质量的控制做了大量的工作。该施工单位在轻质隔墙施工过程中提出以下技术要求:(1)板材隔墙施工过程中如遇到门洞,应从两侧向门洞处依次施工。(2)石膏板安装牢固时,隔墙端部的石膏板与周围的墙、柱应留有10mm的槽口,槽口处加泛嵌缝膏,使面板与邻近表面接触紧密。(3)当轻质隔墙下端用木踢脚覆盖时,饰面板应与地面留有5~10mm缝隙。(4)石膏板的接缝缝隙应保证为8~10mm。该施工单位在施工过程中特别注重现场文明施工和现场的环境保护措施,工程施工后,被评为优质工程。问 题 逐条判断该施工单位在轻质隔墙施工过程中提出的技术要求的正确与否,不正确,请改正。

(一)某建筑工程,建筑面积23824 m2,地上10层,地下2层(地下水位-2.0m)。主体结构为非预应力现浇混凝土框架-剪力墙结构(柱网为9m×9m,局部柱距为6m),梁模板起拱高度分别为20mm、12mm。抗震设防烈度7度。梁、柱受力钢筋为HRB335,接头采用挤压连接。结构主体地下室外墙采用P8防水混凝土浇筑,墙厚250mm,钢筋净距60mm,混凝土为商品混凝土。一、二层柱混凝土强度等级为C40,以上各层柱为C30。在工程施工中发生了如下事件:事件一:钢筋工程施工时,发现梁、柱钢筋的挤压接头有位于梁、柱端箍筋加密区的情况。在现场留取接头试件样本时,是以同一层每600个为一验收批,并按规定抽取试件样本进行合格性检验。事件二:结构主体地下室外墙防水混凝土浇筑过程中,现场对粗骨料的最大粒径进行了检测,检测结果为40mm。事件三:该工程混凝土结构子分部工程完工后,项目经理部提前按验收合格的标准进行了自查。问 题 事件二中,商品混凝土粗骨料最大粒径控制是否准确请从地下结构外墙的截面尺寸、钢筋净距和防水混凝土的设计原则三方面分析本工程防水混凝土粗骨料的最大粒径。

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