单选题斜腹杆宜采用旋转扣件固定在与之相交的横向水平杆的伸出端上,至主节点的距离不宜大于()mmA 1000B 250C 150...
Thursday, April 20, 2023
Tuesday, September 20, 2022
Saturday, September 17, 2022
Tuesday, March 7, 2023
构件堆放过程中裂缝或断裂现象,其主要原因是()。 (1)构件强度不够,支垫不符合要求 (2)堆放支座地基沉陷 (3)构件...
Thursday, September 22, 2022
单选题安全网使用钢管架设时,常用()的钢管。A 46mm×3.5mmB 47mm×3.5mmC 48mm×3.5mmD 49mm×3.5mm...
Friday, April 14, 2023
开口型脚手架:沿建筑周边非交圈设置的脚手架。呈直线的脚手架为一字架。...
Wednesday, September 21, 2022
单选题二级以上的高处作业高度是指超过()m以上。A 15B 10C 5...
Friday, June 30, 2023
Sunday, May 12, 2024
Friday, October 27, 2023
判断题栏杆长度大于6m时,每根栏杆与立杆的连接扣件应不少于3只。A 对B 错...
Tuesday, July 18, 2023
烟囱外脚手架的主要杆件有:立杆、大横杆、小横杆、()、斜撑,此外,还有()和缆风绳等。...
Thursday, September 22, 2022
安全生产相关的法律法规按其立法的主体、法律效力不同可分为()。...
Sunday, September 18, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
特种作业人员实习操作期满,经用人单位考核合格,方可独立作业。...
Wednesday, September 21, 2022
布置卷扬机时,应使钢丝绳绕入卷扬机卷筒的方向与卷筒轴线成()。...
Thursday, September 22, 2022
单选题脚手架永久荷载的分项系数为()。A 1.2B 0.8C 0.6D 1.6...
Friday, October 27, 2023
栏杆长度大于Sm时,每根栏杆与立杆的连接扣件应不少于()只,旋转扣件中心线...
Thursday, September 22, 2022