Tuesday, November 28, 2023
问题:色谱仪中关于汽化室说法不正确的是()。A、汽化室周围有电热丝加热B、汽化室直接与色谱柱连通C、汽化室与热导池直接相连D、汽化室温度由热电偶或温度计测量
Thursday, December 21, 2023
问题:色谱法分析粗煤气中CH4、C02、CO、N2,等气体时,需用()检测器检测。A、FIDB、TCDC、FPDD、ECD
Tuesday, September 13, 2022
Tuesday, November 28, 2023
问题:GC6820是下列()的仪器。A、安捷伦B、瓦里安C、岛津D、戴安
Tuesday, September 13, 2022
Friday, February 16, 2024
Thursday, December 21, 2023
Friday, November 25, 2022
Saturday, October 29, 2022
Friday, February 16, 2024
Tuesday, September 13, 2022
Monday, December 26, 2022
Friday, August 25, 2023
问题:使用氢火焰离子化检测器要用三种气体,开机时首先开通(),再开通(),直到点火时才开通()。
Monday, April 15, 2024
Friday, August 25, 2023
Tuesday, July 4, 2023
Tuesday, November 28, 2023
问题:色谱法分析净化气中微量H2S,COS气体时,需用()检测器检测。A、FIDB、TCDC、FPDD、ECD
Tuesday, September 13, 2022
问题:使用TCD作为检测器,要特别注意控制载气流速的稳定,因为峰面积与载气流速成反比。()
Monday, March 4, 2024
Friday, November 25, 2022