论文部分内容阅读
我们经常接触各种电器设备,因此,必须掌握电的客观规律,没有一定的知识会带来一些不必要的损失和严重后果,如人身伤亡失和火等,特别是人身伤亡事故常有发生。我们应知道人体的电阻(Rr)是很小的,800～1000欧(Ω)通过人体的电流在50毫安(mA)也就是二十分之一安(A)以上,会造成死亡。所以,我们必须要防止触电事故的发生,我们在与电接触时要注意以下事项。
Therefore, we must grasp the objective laws of electricity. Without certain knowledge, we will cause unnecessary losses and serious consequences such as personal injury and death, fire and so on, especially personal injuries and deaths. We should know that the human body’s resistance (Rr) is small, and that 800 to 1000 ohms (Ω) of current through the body is above 50 milliamps (mA), that is, one-twentieth ampere (A) or more, causing death. Therefore, we must prevent the occurrence of electric shock accidents. We should pay attention to the following matters when dealing with electricity.