Friday, January 26, 2024
问题:汽轮机盘车状态时,对氢冷发电机的密封油系统运行有何要求,为什么?...
Monday, March 25, 2024
问题:氢、氧综合塔内的电解液液位,在正常运行时应该是()。A、氢略高于氧;B、氧略高于氢;C、氢处在高位;D、氧处在高位。...
Thursday, December 14, 2023
Sunday, November 27, 2022
Sunday, March 17, 2024
Thursday, October 12, 2023
Tuesday, September 13, 2022
Monday, February 19, 2024
Sunday, March 17, 2024
问题:活泼金属与稀HNO3反应,()。A、有H2生成;B、没有H2生成;C、有H2生成,并立即被硝酸氧化成水;D、有H2和N2生成。...
Tuesday, November 14, 2023
Monday, March 25, 2024
Saturday, December 2, 2023
问题:禁止用两只手分别接触电解槽的()。A、两个不同电极;B、同一电极;C、中心点;D、端部。...
Friday, January 26, 2024
Monday, March 25, 2024
Wednesday, July 12, 2023
问题:当温度升高时,半导体的电阻将()。A、增大;B、减小;C、不变;D、相等。...
Thursday, December 14, 2023
Friday, December 22, 2023
Wednesday, April 26, 2023
Wednesday, July 12, 2023
问题:电解槽的电源采用()。A、直流电;B、交流电;C、交、直流两用;D、交、直流切换。...
Saturday, October 21, 2023