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【判断题】
在拆模过程中,如发现实际混凝土强度并未达到要求,有影响结构安全的质量问题时,应暂停拆模,经妥当处理,实际强度达到要求后,方可继续拆除
A. 对
B. 错
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钢丝绳在使用过程中会不断的磨损、弯曲、变形、锈蚀和断丝等,不能满足安全使用时应予报废,以免发生危险
A. 对
B. 错
【判断题】
钢丝绳在卷筒上缠绕时,要逐圈紧密地排列整齐,不应错叠或离缝
A. 对
B. 错
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作缆风绳用钢丝绳的安全系数为3.5
A. 对
B. 错
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吊钩由于长期使用产生剥裂,必须对其焊接修补后方可继续使用
A. 对
B. 错
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无论哪种千斤顶都不准超负荷使用
A. 对
B. 错
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选用滑轮时,轮槽宽度应比钢丝绳直径大1~2.5mm
A. 对
B. 错
【判断题】
采用桅杆滑移法吊装作业,吊装过程中,工件绝对禁止碰撞桅杆
A. 对
B. 错
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机械拆除建筑时,严禁机械超载作业或任意扩大机械使用范围
A. 对
B. 错
【判断题】
不同级别的爆破拆除工程有相应的设计施工难度,爆破拆除工程设计必须按级别经当地有关部门审核,做出安全评估和审查批准后方可实施
A. 对
B. 错
【判断题】
拆除施工在立体交叉、水平作业时,各工位间应有一定的安全距离
A. 对
B. 错
【判断题】
当临街的被拆除建筑与交通道路的安全距离不能满足要求时,必须采取相应的安全隔离措施
A. 对
B. 错
【判断题】
拆除原用于有毒有害、可燃气体的管道及容器时,必须查清其残留物的种类、化学性质,采取相应措施后,方可进行拆除施工
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【判断题】
拆除工程施工时,设专人向被拆除的部位洒水降尘,减少对周围环境的扬尘污染
A. 对
B. 错
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拆除工程施工过程中,当发生重大险情或生产安全事故时,应及时排除险情、组织抢救、保护事故现场,并向有关部门报告
A. 对
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装载机在倾斜的场地上作业时,作业区内不得有障碍物及无关人员
A. 对
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驾驶司机离开挖掘机驾驶室,不论时间长短必须将铲斗落地并关闭发动机
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桩机作业时,严禁闲人进入。操作人员应在距桩锤中心3m以外监视
A. 对
B. 错
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当风速超过七级,应将桩机顺风向停置,并增加缆风绳
A. 对
B. 错
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打桩作业时,严禁在桩机垂直半径范围以外和桩锤或重物底下穿行停留
A. 对
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搅拌机作业中,当料斗升起时,严禁任何人在料斗下停留或通过
A. 对
B. 错
【判断题】
搅拌机在作业期较长的地区使用时,可用支腿将机架支起后,就可使用
A. 对
B. 错
【判断题】
搅拌机搅拌过程不宜停车,如因故必须停车,在再次启动前应卸除荷载,不得带载启动
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B. 错
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切断机运转中,严禁用手清除切刀附近断头和杂物
A. 对
B. 错
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钢筋切断机未达到正常运转时,不可切料。送料时应在固定刀片一侧握紧并压住钢筋,以防钢筋末端弹出伤人。可用两手分在刀片握住钢筋俯身送料
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B. 错
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灰浆搅拌机运转中,不得用手或木棒等伸进搅拌筒内或在筒口清理灰浆
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圆盘锯的安全防护装置包括分料器、锯盘护罩、防护挡板和传动部位防护罩
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长度短于20cm的木料不得使用电平刨
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机动翻斗车严禁料斗载人
A. 对
B. 错
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当塔机吊重超过最大额定起重量并小于最大起重量的110%时,应停止提升方向的运行,但允许机构有下降方向的运动
A. 对
B. 错
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当起重力矩超过其相应幅度的规定值并小于规定值的110%时,起重力矩限制器应起作用使塔机停止提升方向及向臂根方向变幅的动作
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塔机司机对任何人发出的紧急停止信号,均应服从
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吊笼(梯笼)是物料提升机运载人和物料的构件,笼内有传动机构、限速器及电气箱等
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动臂式和尚未附着的自升式塔机,塔身上不得悬挂标语牌
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卷扬机卷筒与钢丝绳直径的比值应不小于50
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施工升降机运行到最上层或最下层时,可以采用限位装置作为停止运行的控制开关
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风力在四级以上时,塔机不得进行顶升作业
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施工现场装有2台以上塔式起重机时,高位起重机最高部件与低位起重机最低部件之间垂直距离不得小于2m
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低架物料提升机应当设置安全停靠装置、断绳保护装置、上极限限位器、下极限限位器、吊笼安全门和信号装置等安全保护装置
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物料提升机司机应经专门培训,人员要相对稳定,每班开机前,应对卷扬机、钢丝绳、地锚、缆风绳进行检验,并进行空车运行
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【判断题】
脚手架纵向水平杆接长宜采用对接扣件连接,也可采用搭接,搭接长度不应小于500mm
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