【简答题】英文录入练习:(10min内完成) We all stood there under the awning and just inside the door of the Wal-Mart. We waited,some patiently, others irritated because nature messed up their hurried day. I am always mesme...
【判断题】直接转化法Direct conversion使H2S直接转化为元素硫。它主要用于低含硫气体的净化。其中最为成功的是蒽醌法(streford法)和萘醌法。此外还有改良砷碱法(G-V法)H2S is directly converted to elemental sulfur. It is mainly used for the purification of low-sulfur gases. Th...