高中化学（必修本）第二册中，有“乙炔的制取和性质”的实验。按教材中的实验程序去操作，要进行两次组装配套，在塞橡皮塞那一瞬间，气体极易散到空气中；点燃实验时有大量微小炭粒在室内纷纷扬扬；加之乙炔气体中常含有H２S，PH３等有毒气体而污染空气，对人体造成危害。再 In the second volume of High School Chemistry (required), there is an experiment on the preparation and properties of acetylene. According to the experimental procedures in the textbook, two assembly kits are required. At the moment of plugging the rubber plug, the gas can easily dissipate into the air. When the experiment is lit, a large number of tiny carbon particles rise in the room; the acetylene gas often contains H2S. , PH3 and other toxic gases and pollute the air, causing harm to the human body. again