大工16春《建筑材料》在线作业3满分参考

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4、rrors, specific method is from baseline to methyl vertical box center line distance for a, to b vertical box distance for b, list can measuredseveral group number, then with b a, =c,c is is methyl b two vertical box between of accurate size. Per-23 measurement, such as proceeds of c values are equal

5、 and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line dist

6、ance for a, to b vertical box distance for b, list can measured大工16春建筑材料在线作业3一、判断题（共 13 道试题，共 52 分。）1. 在钢材中加入合金元素，目的是为了使钢具有更优异的性能。A. 错误B. 正确正确答案：B2. 烧结普通砖的抗风化性能与砖的使用寿命密切相关。A. 错误B. 正确正确答案：B3. 石膏不可以作为胶凝材料用于砂浆中。A. 错误B. 正确正确答案：A4. 纸面石膏板按其用途分为普通纸面石膏板和耐酸纸面石膏板两类。A. 错误B. 正确正确答案：A5. 抹面砂浆与砌筑砂浆的组成材料基本相同。A. 错误B

7、. 正确正确答案：B6. 钢材的含氮量对钢材的焊接性能影响最大。A. 错误B. 正确正确答案：A7. 焊接结构应该选用含碳量较低的氧化转炉或平炉的镇静钢。A. 错误B. 正确正确答案：B8. 沸腾钢要比镇静钢质量好，脱氧更充分。A. 错误B. 正确正确答案：A9. “Q345”是低合金高强度结构钢的牌号。A. 错误B. 正确正确答案：B10. 低合金高强度结构钢是在碳素结构钢的基础上加入总量小于5%的合金元素而形成的钢种。A. 错误B. 正确正确答案：B11. 石灰可以用作拌制砂浆的胶凝材料。A. 错误B. 正确正确答案：B12. 砂浆与混凝土的不同之处在于没有粗骨料，因此有关混凝土的各种基本

8、规律，大都不适合于建筑砂浆。A. 错误B. 正确正确答案：A13. 对有防水和防潮有要求的部位应采用石灰砂浆。A. 错误B. 正确正确答案：A 大工16春建筑材料在线作业3二、单选题（共 5 道试题，共 30 分。）1. 伸长率是衡量钢材（）的指标。A. 脆性B. 弹性C. 塑性D. 硬度正确答案：C2. 烧结普通砖的标准尺寸为（）。A. 238mm115mm53mmB. 240mm115mm53mmC. 238mm115mm55mmD. 240mm115mm55mm正确答案：B3. 砖在砌筑前必须浇水润湿的目的是（）。A. 提高砖的强度B. 提高砂浆的强度C. 提高砂浆的粘结力D. 便于施工正确答案：C4. 新拌砂浆的流动性用（）来测定。A. 分层度测试仪B. 稠度测定仪C. 针入度仪D. 贯入度仪正确答案：B5. 钢材随时间的延长，强度、硬度提高，而塑性、冲击韧性下降的现象称为（）。A. 徐变B. 时效C. 陈伏D. 屈服正确答案：B 大工16春建筑材料在线作业3三、多选题（共 2 道试题，共 18 分。）1. 下列材料中，可以作为烧结多孔砖主要原料的有（）。A. 黏土B. 页岩C. 煤矸石D. 粉煤灰正确答案：ABCD2. 钢材按化学成分分为（）几类。A. 碳素钢B. 镇静钢C.