【单选题】【消耗次数:1】
细石混凝土刚性防水屋面厚度不宜小于()。
30mm
40~50mm
45mm
45~50mm
参考答案:
复制
纠错
相关题目
【单选题】 锚接是在踏步上预留孔洞,然后将钢条插人孔内,预留孔一般为50mm×50mm,插人洞内至少(),洞内浇注水泥砂浆或细石混凝土嵌固。
①  80mm
②  85mm
③  90mm
【判断题】 模板支架底部应设置底座和垫板,垫板长度不小于3倍立杆纵距,宽度不小于100mm,厚度不小于50mm。
①  正确
②  错误
【单选题】 屋面防水等级I级,采用高聚物改性沥青防水卷材时,厚度不应小于()mm。
①  2
②  3
③  4
④  5
【判断题】 刚性防水屋面是指用刚性材料做防水层的屋面。其防水层采用防水砂浆和防水细石混凝土。
①  正确
②  错误
【单选题】 钢筋拉伸后的长度是1000mm,拉伸了50mm, 则该钢筋的伸长率是多少?
①  4.8%5%
②  5.3%
③  10%
【单选题】 模板支撑立柱落在土基地面时,底座垫板必须采用长度不少于( )跨、厚度不小于50mm、宽度不小于200mm木垫板或仰铺12号以上的槽钢;
①  2
②  3
③  4
④  5
【单选题】 粒径小于( )mm的骨料称为细骨料,俗称砂。
①  4.5
②  4.75
③  5.5
④  5.75
【单选题】 一般民用建筑门的高度不宜小于( )mm。
①  2100
②  2200mm
③  2300
④  2400
【单选题】 腹杆与腹杆之间的间隙不宜小于()mm。
①  10
②  20
③  30
④  40
【判断题】 附着式升降脚手架升降操作时,各相邻提升点间的高差不得大于50mm,整体架最大升降差不得大于100mm。
①  正确
②  错误
随机题目
【判断题】 Shopping-bag ladies do not seem to like one another very much.
①  正确
②  错误
【判断题】 “Don’t panic; just hold on that rock and I’ll come and fetch you down.”
①  正确
②  错误
【判断题】 Newspapers stuff between the layers as further protection against bad weather.
①  正确
②  错误
【判断题】 It wasnt long before Mother had a full enrollment and a waiting list.
①  正确
②  错误
【判断题】 Father didn’t look up from his book when I entered the living room.
①  正确
②  错误
【判断题】 Mrs. Fuller went on a diet and in three months brought down her weight to 100 pounds.
①  正确
②  错误
【判断题】 The contract had run away before Mr. Cook was able to find a new job.
①  正确
②  错误
【判断题】 In addition to a large collection of scientific works in Chinese, our library contains many scientific books in foreign languages.
①  正确
②  错误
【单选题】 — Could I use your dictionary for a moment?— _______________________.
①  Its well
②  It doesnt matter
③  I have no idea
④  By all means
【单选题】 Its bad ________ for you to smoke in the public places where smoking is not allowed.
①  :behavior
②  :action
③  :manner
④  :movement