Tuesday, April 9, 2024
Sunday, September 11, 2022
用非金属材料外壳或非金属外壳部件制造的防爆电气,其非金属材料必须...
Wednesday, September 14, 2022
隔爆型电气设备是指将所有能产生火花、电弧和危险温度的零部件都放到...
Sunday, September 11, 2022
井下照明灯、接线盒等固定电气设备主要是采用()的电气设备。...
Sunday, September 11, 2022
一防爆接线盒,穿入电缆直径为45mm,如压紧后电缆的直径减少为4...
Sunday, September 11, 2022
Friday, September 23, 2022
兼作行人的斜巷必须严格遵守的“行车不行人、行人不行车”行人制度。...
Sunday, September 11, 2022
矿井应有两回路电源线路,两回路电源线路上都不得分接任何负荷。正常...
Wednesday, September 14, 2022
Thursday, October 5, 2023
隔爆空腔净容积为>2(升)时,静止隔爆面的间隙与接合面宽度应分别...
Sunday, September 11, 2022
防止瓦斯引燃的主要措施有严格()管理,防止();防止()火焰;防...
Sunday, September 11, 2022
Sunday, September 11, 2022
Wednesday, September 14, 2022
Saturday, March 30, 2024
Wednesday, September 14, 2022
Sunday, November 5, 2023
隔爆外壳的严重变形是指变形长度超过()mm,同时凸凹深度超过()mm。A、50;5B、40;5C、40;4...
Sunday, November 5, 2023
Wednesday, September 6, 2023