发布时间:2025-02-04 02:32:29
【答案】:A
吊杆、龙骨的尺寸与间距应符合下列规定:①不上人吊顶的吊杆应采用不小于直径6mm的钢筋、M6全牙吊杆或直径不小于2mm的镀锌低碳退火钢丝;②上人吊顶的吊杆应采用不小于直径8mm的钢筋或M8全牙吊杆。
消防火灾自动报警系统中的点位数量是怎样计算的烟感温感手报消报声光报电话插孔风阀信号
2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29 2025-02-04 02:32:29