尽人皆知,我国过去生产的汽车都不装电源安全总开关,在实际使用过程中出现了不少安全问题,其教训至为深刻。近些年来,部分汽车上装了手闸式电源开关,但毕竟还比较原始,也还存在种种弊端。 It is well known that in the past, all cars manufactured in our country did not have a power safety switch, and many safety problems arose during the actual use. The lessons learned were profound. In recent years, some cars equipped with hand-held power switch, but after all, still relatively primitive, there are still many drawbacks.