Monday, January 22, 2024
问题:润滑油具有润滑,密封,减振,卸荷和防锈等作用,不具有冷却冷却作用。
Tuesday, March 19, 2024
Monday, February 19, 2024
Sunday, April 7, 2024
Tuesday, March 19, 2024
问题:正常生产中,切换备用泵的操作步骤是()。A、先停运转泵,再开备用泵B、先开备用泵,停运转泵C、无所谓
Tuesday, March 19, 2024
Thursday, March 21, 2024
Sunday, April 7, 2024
Monday, February 12, 2024
问题:蒸汽往复泵ZQYR--112/25型号中,表示25最大排出压力为25KG/CM2。
Tuesday, March 19, 2024
Monday, February 19, 2024
Monday, January 29, 2024
Tuesday, March 19, 2024
Sunday, April 7, 2024
Friday, October 13, 2023
问题:换热器检修前,放空器内压力,并将所存油晶排出,然后通蒸汽吹扫,降温后,始可拆卸。
Tuesday, March 19, 2024
问题:同一种原油的馏份油,馏份越窄,含地蜡越少,油收率越高。
Tuesday, March 19, 2024
Thursday, March 21, 2024
Thursday, March 21, 2024
Wednesday, November 22, 2023