１９９４年全国化学竞赛理论试题第１题在燃烧煤、石油的废气中常含有ＣＯ、ＮＯｘ、ＳＯ２等气体．排放前，这些有害气体都应尽量除去。请根据下列数据尽可能多地提出从废气中除去ＮＯｘ的可能途径（如有反应式，请一并写出）；并指出实施时所需的条件。第２题已知：Ａｇ... In 1994, the first issue of the national chemistry competition theory test questions included gases such as CO, NOx, and SO2 in the combustion of coal and petroleum. Before discharge, these harmful gases should be removed as much as possible. Please provide as many possible ways of removing NOx from the exhaust gas as possible according to the following data (if any, please write it together); and indicate the conditions required for implementation. Question 2 is known: Ag...