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
Saturday, December 2, 2023
Thursday, October 19, 2023
Friday, January 26, 2024
Wednesday, April 26, 2023
Friday, December 22, 2023
Friday, September 16, 2022
Tuesday, April 2, 2024
问题:不能作为中间气体的是()。A、氧气;B、氮气;C、二氧化碳;D、氦气。
Tuesday, September 13, 2022
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
Monday, February 19, 2024
Friday, January 26, 2024
Monday, March 25, 2024
问题:补水箱自动补水的原理是依靠()。A、补水箱安装标高比压力调整器高、利用水位差自动补水B、补水箱内部压力高于压力调整器,利用压力差补水C、依靠氢、氧综合塔的液位差D、依靠氢综合塔的液位高低转换
Thursday, October 12, 2023
Saturday, December 2, 2023
Tuesday, April 2, 2024
Tuesday, August 8, 2023
Wednesday, July 12, 2023
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?
Saturday, April 13, 2024
Friday, January 26, 2024