【单选题】
(36682)桥面钢轨接头冻结或焊接时,轨卡螺栓扭矩为___。(1.0分)
A. 40~50N•m
B. 40~70N•m
C. 40~60N•m
D. 40~80N•m
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相关试题
【单选题】
(36683)K型扣件铁垫板下垫板不宜过厚,一般为___。(1.0分)
A. 20mm以下
B. 12mm上
C. 12~15mm
D. 4~12mm
【单选题】
(36684)桥梁墩身裂纹在有冰冻作用的部分不得大于___。(1.0分)
A. 0.2mm
B. 0.3mm
C. 0.4mm
D. 0.5mm
【单选题】
(36685)铸钢平板支座的活动支座上座板应设___销孔,使梁能纵向伸缩。(1.0分)
A. 长圆形
B. 长方形
C. 正方形
D. 菱形
【单选题】
57/99538.(36686)标准断面桥枕因腐朽、挖补、削平和挖槽累计深度超过___为失效桥枕。(1.0分)
A. 50mm
B. 60mm
C. 70mm
D. 80mm
【单选题】
(36687)护木内侧与基本轨头部外侧的距离I式为___。(1.0分)
A. 200mm以上
B. 220~500mm
C. 300~400mm
D. 500mm以下
【单选题】
(36688)为调整桥面钢轨上拱度,桥枕容许挖深___以内的槽口。(1.0分)
A. 20mm
B. 30mm
C. 40mm
D. 50mm
【单选题】
(36689)沉降缝的宽度一般为___。(1.0分)
A. 1~2cm
B. 2~3cm
C. 3~4cm
D. 4~5cm
【单选题】
(36690)桥长在100m以上至500m的桥称为___。(1.0分)
【单选题】
(36691)钢梁连接板和杆件上大于___的缝隙须用石膏腻子填空。(1.0分)
A. 1.0mm
B. 1.5.mm
C. 0.5mm
D. 0.3mm
【单选题】
(36692)钢结构喷砂所用的沙子应采用干燥、洁净、无盐分、无污染、呈锐角的石英砂或河砂,粒径为___。(1.0分)
A. 0.5~2mm
B. 1~3mm
C. 2~3mm
D. 3~4mm
【单选题】
(36693)特制红丹酚醛底漆的表面干燥时间应___。(1.0分)
A. ≤4h
B. ≤5h
C. ≤6h
D. ≤7h
【单选题】
(36694)造成桥枕腐朽的主要因素是___。(1.0分)
A. 受压
B. 受污染
C. 产生裂缝
D. 受拉
【单选题】
(36695)严寒地区隧道使用盲沟排水时,盲沟深度最少为___以上,还应考虑保温措施。(1.0分)
A. 15cm
B. 16cm
C. 18cm
D. 20cm
【单选题】
(36696)水泥砂浆必须有适度的和易性和流动性,稠度一般为___。(1.0分)
A. 5~8cm
B. 4~7cm
C. 10~20cm
D. 10cm以上
【单选题】
(36697)墩台浅基使用浆砌片石防护时,护基顶面应设置在___以下。(1.0分)
A. 河床最低点
B. 河床平均断面
C. 最大冲刷线
D. 一般冲刷线
【单选题】
(36699)明桥面上线路不应设置竖曲线和缓和曲线,也不宜设在___的坡道上。(1.0分)
A. >1‰
B. >2‰
C. >3‰
D. >4‰
【单选题】
(36701)动滑轮的特点是___。(1.0分)
A. 能改变力的方向而且省力
B. 只能省力不能改变力的方向
C. 不能省力,也不能改变力的方向
D. 能改变力的方向,但不能省力
【单选题】
(36702)装吊作业在风力超过___时,应停止作业。(1.0分)
【单选题】
(36703)钢丝的磨损或锈蚀程度达到或超过钢丝直径___时,应予报废。(1.0分)
A. 20%
B. 30%
C. 40%
D. 50%
【单选题】
(36704)水准测量时,后视A点读数为2.000m,前视B点读数为1.500m,则A点比B点高___。(1.0分)
A. 0.500m
B. -0.500m
C. 3.500m
D. 1.500m
【单选题】
(36705)桥梁的活动支座禁止在辊轴和活动面上涂___。(1.0分)
【单选题】
后两桥枕中心距不超过___。(1.0分)
A. 350mm
B. 450mm
C. 550mm
D. 600mm
【单选题】
59/99559.(36707)油水分离器不能清除压缩空气中的___。(1.0分)
【单选题】
(36708)在持续荷载作用下,混凝土产生随时间而增加的变形称为___。(1.0分)
【单选题】
(36709)一般混凝土的正常含砂率为___。(1.0分)
A. 30%~38%
B. 20%~28%
C. 10%~18%
D. 40%~48%
【单选题】
(36710)Ⅱ级螺纹钢筋对受拉区钢筋的绑扎接头的最小搭接长度不应小于___。(1.0分)
A. 40d
B. 35d
C. 30d
D. 25d
【单选题】
(36711)钢筋种类很多,按轧制外形分圆形钢筋和___。(1.0分)
A. 螺纹筋
B. 冷拔钢丝
C. 变形钢筋
D. 热轧钢筋
【单选题】
(36712)竖立扒杆的转动法适用于___。(1.0分)
A. 高独脚扒杆
B. 人字扒杆
C. 龙门扒杆
D. 以上三种
【单选题】
(36713)既能垂直吊重,又能在一定范围内进行水平位移的扒杆是___。(1.0分)
A. 高独脚扒杆
B. 摇臂扒杆
C. 龙门扒杆
D. 人字扒杆
【单选题】
(36714)___不是吊装作业基本操作方法。(1.0分)
【单选题】
(36715)列车通过桥梁时测得的挠度为___挠度。(1.0分)
【单选题】
(36716)在钢筋与钢板间进行搭接焊时,焊缝宽度应等于或大于被焊钢筋直径的0.5倍,并不小于___。 (1.0分)
A. 6mm
B. 7mm
C. 8mm
D. 9mm
【单选题】
(36717)滑车组不能___。(1.0分)
A. 省力
B. 改变力的方向
C. 起吊物体
D. 减少摩擦
【单选题】
(36719)吊钩试验应用比容许载重大___的量重试吊。(1.0分)
A. 10%
B. 15%
C. 20%
D. 25%
【单选题】
(36720)铁丝石笼的___网孔受力可较大,较为坚固。(1.0分)
A. 六角形
B. 四角形
C. 圆孔
D. 方形
【单选题】
(36721)石笼铺设前基底要整平,石笼与石笼之间,应用铁丝或直径为___的钢筋连接牢固。(1.0分)
A. 2~3mm
B. 3~4mm
C. 4~6mm
D. 6~8mm
【单选题】
(36722)砌片石作业,铺砌坡度符合要求,表面凹陷用2m弦线丈量应小于___。(1.0分)
A. 30mm
B. 50mm
C. 80mm
D. 100mm
【单选题】
(36723)石笼的网眼对角线不大于___。(1.0分)
A. 100mm
B. 120mm
C. 140mm
D. 160mm
【单选题】
(36724)桥梁维修后钩、护螺栓应顺直,中心左右偏差不超过___。(1.0分)
A. 3mm
B. 5mm
C. 4mm
D. 6mm
【单选题】
(36725)高性能轻混凝土的抗压强度可达到___。(1.0分)
A. 50MPa
B. 60MPa
C. 70MPa
D. 80MPa
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