题目内容
(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 该工程梁模板的起拱高度是否正确说明理由。模板拆除时，混凝土强度应满足什么要求？
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(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 按照《建筑装饰装修工程质量验收规范》和《民用建筑工程室内环境污染控制规范》的规定，一般情况下，装饰装修工程中应对哪些进场材料的种类和项目进行复验？
未取得经济法律关系的主体资格的组织不能参与经济法律关系，不能从中享有权利和承担义务，不受法律保护。( )
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.
由曲线x=ln(1+y2)与直线x=ln2所围平面图形的面积为______．
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