Saturday, May 11, 2024
Thursday, September 15, 2022
Monday, September 12, 2022
《城镇燃气设计规范》中规定在具有爆炸危险场所使用的电话应采用()。(条款8.12.2)A、防水型B、防雾型C、防爆型D、无线型...
Sunday, November 5, 2023
Thursday, January 5, 2023
Thursday, September 15, 2022
Monday, September 12, 2022
Monday, September 12, 2022
Wednesday, February 7, 2024
城镇燃气管网系采用多种不同压力管网组成的多级系统的作用是什么?...
Monday, September 12, 2022
Thursday, September 15, 2022
Sunday, November 5, 2023
Tuesday, January 16, 2024
Wednesday, August 16, 2023
下列几项中不属于燃气用具上的安全保护装置是:()A、压力保护装置B、熄火保护装置C、缺氧保护装置D、过热保护装置...
Monday, May 15, 2023
城市燃气管道造价在很大程度上取决于管径,与壁厚关系相对较小。...
Thursday, December 7, 2023
Tuesday, February 28, 2023
Thursday, September 15, 2022
城镇燃气输配系统的的主要部分是燃气管网,根据所采用的管网压力级制...
Thursday, September 15, 2022