【单选题】
( )一般指在水土压力作用下,隧道衬砌(钢筋混凝土管片或钢管片等)结构在弯曲受压区域或偏心受压区引起的裂缝,其特征是裂纹边缘呈压碎状,严重时受压区表面产生碎片剥落掉块等现象。 ___
A. 压溃
B. 张裂
C. 错缝
D. 错台
查看试卷,进入试卷练习
微信扫一扫,开始刷题

答案
A
解析
暂无解析
相关试题
【单选题】
隧道管片( )指的是一般由管片接缝处防水严重损失引起,当渗漏水部位在隧道顶部时,在管片表面接缝或螺栓附近形成连续的渗漏水现象。 ___
A. 积水
B. 渗水
C. 滴漏
D. 线漏
【单选题】
隧道衬砌(钢筋混凝土管片或钢管片等)劣损的类型主要有衬砌变形、衬砌移动和衬砌( )三种,是隧道衬砌在运营过程中物理性质逐渐劣化的主要表现形式。 ___
A. 断裂
B. 碎裂
C. 开裂
D. 破裂
【单选题】
隧道衬砌(钢筋混凝土管片或钢管片等)劣损的类型主要有衬砌变形、衬砌移动和衬砌开裂三种,是隧道衬砌在运营过程中( )性质逐渐劣化的主要表现形式。 ___
A. 物理
B. 化学
C. 静态
D. 动态
【单选题】
衬砌变形一般指水土压力作用下,隧道衬砌(钢筋混凝土管片或钢管片等)结构的横向变形和纵向变形,其中以()变形为主要变形。 ___
A. 纵向
B. 横向
C. 水平
D. 垂直
【单选题】
卷材防水材料必须铺贴在具有足够()的基层上,粘贴前要涂抹找平层,防水层的外面应加保护层,并要作好柔性材料的转角、接茬和接头的处理,以确保防水层的连续性和密封性。 ___
A. 刚度
B. 强度
C. 硬度
D. 垂直度
【单选题】
卷材防水材料必须铺贴在具有足够刚度的基层上,粘贴前要涂抹找平层,防水层的外面应加保护层,并要作好柔性材料的转角、接茬和接头的处理,以确保防水层的()和密封性。 ___
A. 永久性
B. 连续性
C. 耐腐蚀性
D. 韧性
【单选题】
基面找平到位,基层应坚固、密实,没有起砂、裂缝、蜂窝麻面等现象。否则应将基层表面用()水泥砂浆整平,允许空隙不应大于2mm(用2 m直尺检查平整度)。 ___
A. 1比1
B. 1比2
C. 1比3
D. 2比1
【多选题】
" ___
A. 地基地坪:有承载能力、稍有超过设计允许范围的不均匀沉降,但已稳定。整体面层稍有裂缝、空鼓、起砂。
B. 承重构件:有少量损坏,基本牢固。
C. 钢筋混凝土个别构件有轻微变形、细小裂缝,混凝土有轻度剥落、露筋。
D. 车站公共区、轨行区、设备区有局部渗漏水,不影响乘客、列车、设备。
推荐试题
【判断题】
党组织应当保障党员知情权和监督权,鼓励和支持党员在党内监督中发挥积极作用。提倡署真实姓名反映违纪事实,党组织应当为检举控告者严格保密,并以适当方式向其反馈办理情况
A. 对
B. 错
【单选题】
Read this pasaage and answer the five questions
That people often experience trouble sleeping in a different bed in unfamiliar surroundings is a phenomenon known as the “first-night” effect. If a person stays in the same room the following night they tend to sleep more soundly. Yuka Sasaki and her colleagues at Brown University set out to investigate the origins of this effect.
Dr. Sasaki knew the first-night effect probably has something to do with how humans evolved. The puzzle was what benefit would be gained from it when performance might be affected the following day. She also knew from previous work conducted on birds and dolphins that these animals put half of their brains to sleep at a time so that they can rest while remaining alert enough to avoid predators (捕食者). This led her to wonder if people might be doing the same thing. To take a closer look, her team studied 35 healthy people as they slept in the unfamiliar environment of the university’s Department of Psychological Sciences. The participants each slept in the department for two nights and were carefully monitored with techniques that looked at the activity of their brains. Dr. Sasaki found, as expected, the participants slept less well on their first night than they did on their second, taking more than twice as long to fall asleep and sleeping less overall. During deep sleep, the participants’ brains behaved in a similar manner seen in birds and dolphins. On the first night only, the left hemispheres (半球) of their brains did not sleep nearly as deeply as their right hemispheres did.
Curious if the left hemispheres were indeed remaining awake to process information detected in the surrounding environment, Dr. Sasaki re-ran the experiment while presenting the sleeping participants with a mix of regularly timed beeps (蜂鸣声) of the same tone and irregular beeps of a different tone during the night. She worked out that, if the left hemisphere was staying alert to keep guard in a strange environment, then it would react to the irregular beeps by stirring people from sleep and would ignore the regularly timed ones. This is precisely what she found.
Question1:
What did researchers find puzzling about the first-night effect?
A. What role it has played in evolution.
B. To what extent it can trouble people.
C. What circumstances may trigger it.
D. In what way it can be beneficial. .
【单选题】
Question2:
What do we learn about Dr. Yuka Sasaki doing her research?
A. She found birds and dolphins remain alert while asleep.
B. She found birds and dolphins sleep in much the same way.
C. She got some idea from previous studies on birds and dolphins.
D. She conducted studies on birds’ and dolphins’ sleeping patterns.
【单选题】
在产品只计算材料成本,主要适合于___的产品。
A. 月末在产品数量较大,但各月大体相同
B. 定额资料比较完整
C. 直接材料费用在产品成本中所占比重较大
D. 工资和其他费用发生比较均衡
【单选题】
将上一步骤转入的半成品成本全部计入下一步骤成本计算单中的“自制半成品或“原材料”成本项目,这种成本结转方式称为___。
A. 分项结转
B. 平行结转
C. 成本还原
D. 综合结转