问题:空载检查起升机构高度限制器好坏时,将吊钩升到规定的高度后,如能停...
Saturday, September 17, 2022
问题:制造许可方式为产品型式试验的,制造许可的程序为:申请、受理、型式...
Friday, September 16, 2022
问题:能使手部与带电物体绝缘,防止人体触电的手臂防护用品是:()。...
Saturday, September 17, 2022
问题:起重机吊运炽热、熔融金属的起重机起升高度大于m时,应当设置下降深...
Saturday, September 17, 2022
Saturday, September 17, 2022
问题:多层缠绕的卷筒端部凸缘应比最外层的钢丝绳或链条高出( )倍的钢丝...
Thursday, September 15, 2022
Saturday, September 17, 2022
问题:钢丝绳脱槽(脱离卷筒绳槽)或脱轮(脱离滑轮)事故不会导致失落事故...
Saturday, September 17, 2022
问题:登高人员必须();使用的安全带和安全帽应符合相关标准的要求()。...
Saturday, September 17, 2022
问题:按《塔式起重机技术条件》规定,塔式起重机检验分为()三种。...
Saturday, September 17, 2022
问题:岸边集装箱起重机检测到超载信号时,只允起升机构()...
Saturday, September 17, 2022
Thursday, September 15, 2022
Saturday, September 17, 2022
问题:曳引驱动是靠钢丝绳与曳引机绳轮槽的摩擦力使搬运器及对重升降的驱动...
Saturday, September 17, 2022
Wednesday, September 14, 2022
Wednesday, September 14, 2022
问题:在吊运过程中,被吊物应高于地面设备或其它物体()以上...
Saturday, September 17, 2022
问题:《特种设备安全监察条例》中所指的起重机械是额定起重量大于或者等于...
Saturday, September 17, 2022
Thursday, February 15, 2024
Sunday, September 11, 2022