问题:可移式落地灯和台灯灯具对于易碎部件、其他部件的冲击能量测试要求分别为()A、0.35Nm;0.2NmB、0.35Nm;0.35NmC、0.35Nm;0.50Nm...
Sunday, June 15, 2025
Saturday, November 30, 2024
Wednesday, August 21, 2024
Friday, February 14, 2025
问题:隧道照明灯具和柱式合成灯具带的侧开式外部部件配玻璃件的外壳防护等级至少应达到IP()。A、X3B、X4C、X5...
Monday, May 19, 2025
Saturday, March 15, 2025
Wednesday, August 21, 2024
Monday, November 18, 2024
问题:不适用于高强度气体放灯安全要求标准GB19652的灯有()A、单端荧光灯B、高压钠灯C、金属卤化物灯D、高压汞灯...
Saturday, November 30, 2024
问题:某种灯具,可以使用6个最大功率为40W的白炽灯泡,在标记额定功率时,下面哪种表达是正确的()A、240WB、60WC、6×40WD、6×MAX 40W...
Tuesday, August 13, 2024
Thursday, April 25, 2024
问题:螺口灯泡分为以下几种类型()A、E13B、E14C、E27D、E28...
Sunday, November 17, 2024
问题:荧光灯长度与瓦数成反比,即瓦数越大荧光灯管越短。...
Saturday, March 15, 2025
问题:吊灯金属表面通常采用的是()工艺A、喷漆B、烤漆C、电镀D、纯铜表面...
Monday, July 21, 2025
Wednesday, February 19, 2025
Wednesday, November 8, 2023
Friday, February 14, 2025
问题:热量的传递有那几种方式,分别是?有哪些途径可以降低灯具的温度?...
Tuesday, September 13, 2022
问题:支架:安装荧光灯管的简易灯具,可吸顶、吊杆或吊链式安装。根据镇流器不同,有分为()和()支架。...
Thursday, April 25, 2024