Wednesday, April 24, 2024
Tuesday, August 15, 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
Sunday, January 5, 2025
问题:焚烧炉筒体的水平允许偏差为()。A、±10mmB、±2mmC、±5mmD、±0.1mm...
Monday, March 18, 2024
Sunday, October 1, 2023
Friday, May 16, 2025
Thursday, March 21, 2024
问题:气化是指煤经过干燥,(),(),氧化等一系列的物理和化学反应,最终得到煤气和灰渣的过程,其过程极其复杂,层次是极不稳定,犬牙交错。气化效率一般是()。...
Saturday, June 10, 2023
Saturday, December 28, 2024
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...
Saturday, April 5, 2025
Sunday, January 5, 2025
问题:作业场所的煤气含量达20—40ppm时允许作业人员时间为不超过(),40—80ppm时工作时间不超过(),80—160ppm时工作时间不超过(),240ppm时()。...
Sunday, January 5, 2025
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。...
Thursday, January 16, 2025
Tuesday, September 13, 2022
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。...
Friday, May 17, 2024
Saturday, March 30, 2024
Thursday, June 1, 2023