Friday, March 29, 2024
Sunday, October 1, 2023
Sunday, October 1, 2023
问题:吹扫或引气过程中,严禁在煤气设施上栓、拉电焊线,煤气设施周围()内严禁火源。
Sunday, October 1, 2023
Friday, July 21, 2023
Tuesday, September 13, 2022
问题:造成下段煤气出焦油的因素有哪几个方面?请简要分析说明。
Sunday, October 1, 2023
Friday, October 27, 2023
问题:煤气爆炸范围是指()与空气或氧混合到某一混合浓度范围内,一旦有()时就会发生爆炸。
Friday, October 7, 2022
Thursday, June 1, 2023
问题:水封的有效高度为煤气计算压力加()毫米水柱。A、5米B、600毫米C、500厘米D、50厘米
Tuesday, September 13, 2022
Tuesday, August 15, 2023
Friday, July 21, 2023
Thursday, March 21, 2024
问题:架空管道因()会引起管道的线性膨胀或收缩。A、温度变化B、时间变化C、天气变化D、使用寿命长短
Monday, September 12, 2022
问题:检查水封高度可以看溢流口是否(),有水溢流说明排水器里水是满的,水封高度正常,若无溢流可()
Monday, September 12, 2022
Saturday, November 26, 2022
Tuesday, September 13, 2022
Tuesday, September 13, 2022