下列属于连消设备的有() ["A、维持罐","B、连消塔","C、配料罐","D、喷淋冷却"]
风水管路应使用扁铁和管卡吊挂,四条管路摆放间距上下各为(),从上至下依次为供水管、压风管、排水管、排水管,并刷漆。 ["A.50mm","B.100mm","C.200mm"]
质量通病防治措施中要求,变电站道路胀缝下部用胀缝板填充,上部()高密封宜为中性硅酮耐候密封胶。 ["A、20mm","B、40mm","C、50mm","D、60mm"]
质量通病防治措施中要求,变电站道路缩缝间距不大于()。 ["A、2m,","B、3m,","C、4m,","D、6m。"]
掘进巷道挂网时,连网时扎结点间距不大于(),扎结点的扎丝头不准露出网的外平面,并且方向一致。 ["A.50mm","B.100mm","C.200mm"]
阀门定位器的主要作用有哪些?