“实验室制取氧气”题目多种多样,主要考察反应原理的书写,仪器的选择、组装,实验步骤,气体收集、验满方法,以及根据作用不同对装置进行的改进等等。实验室制取气体的整套装置一般可分为“发生装置”和“收集装置”两部分。 The topics of “Laboratory Oxygen Preparation” are varied. They mainly cover the writing of reaction principle, the selection of instruments, assembly, experimental procedures, gas collection and inspection methods, as well as the improvement of devices according to different functions. Laboratory gas production unit can be generally divided into “generating device ” and “collecting device ” two parts.