Friday, September 16, 2022
在生产过程中,由于各种原因引起的火灾,造成人员伤亡或物资财产损失...
Friday, September 16, 2022
粗氢气的二氧化碳含量不合格的主要原因是()操作不稳所造成。...
Monday, September 12, 2022
催化剂中毒可分为两种:一种为可逆中毒,一种为()中毒。...
Saturday, September 17, 2022
风开阀是指有风就(),无风则()且阀心开度与风量的大小成()变化...
Friday, September 16, 2022
Monday, September 12, 2022
Friday, September 16, 2022
Monday, September 12, 2022
Sunday, September 11, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Monday, September 12, 2022
一般活塞式压缩机的四个工作过程是()、()、()和()。...
Wednesday, May 15, 2024
Friday, September 16, 2022
Friday, September 16, 2022
在传动设备的检修工作中,只需在电气开关上挂有“有人作业,禁止合闸...
Monday, September 12, 2022
Monday, September 12, 2022
Monday, September 12, 2022
转化配氢时,转化床层温度应该达到()。A、600℃B、560℃C、700℃D、650℃...
Sunday, December 17, 2023
Monday, September 12, 2022