Wednesday, May 3, 2023
如在室内发现天然气气味,应立即()A、打电话报警或燃气公司B、打开油烟机C、打开门窗D、用湿毛巾捂住呼吸...
Friday, June 2, 2023
安装时法兰螺孔应能保证螺栓自由插入,螺栓拧紧后应外露()扣。...
Thursday, September 15, 2022
Thursday, September 15, 2022
一贮油罐高度为1m,油品比重r=0.9,油处于1m高度时油罐底部...
Thursday, September 15, 2022
Thursday, April 11, 2024
Thursday, September 15, 2022
Thursday, September 15, 2022
Monday, September 12, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, May 2, 2024
防腐绝缘层的防腐原理是利用防腐绝缘层来加大管道与土壤间的过渡电阻(),降低,减小电化学腐蚀达到防腐的目的。...
Tuesday, September 12, 2023
Thursday, September 15, 2022
加气站在加气前必须对气瓶及附件情况进行认真检查,其主要目的是什么...
Thursday, September 15, 2022
Friday, March 3, 2023
Thursday, September 15, 2022
进行场站维修时,经培训过的专业维修人员可以带压进行维修()...
Monday, September 12, 2022
Monday, September 12, 2022
通常所说的天然气相对密度是指压力为(),温度为()条件下,天然气...
Thursday, September 15, 2022