人们经常使用插头接通电源。现在使用的插头大部分在插头片的前端带有小孔,以与插座夹片的突起配合,使其达到良好接触,但当我们需将插头拔出时,有时会发生不易拔出的情况。若用力直拔,还会因用力过猛而使插头的电线被带出,容易造成连电或触电。对人身或设备的安全构成威胁。 People often use the plug to turn on the power. Most of the plugs used now have small holes in the front of the plug for mating with the tabs of the jack so as to make good contact with them. However, when the plug is unplugged, unplugging may sometimes occur. If the force straight pull, but also because of excessive force so that the plug wire is brought out, likely to cause even electricity or electric shock. Pose a threat to the safety of the person or equipment.