接地线操作的顺序是如何规定的？
["\u5f53\u9a8c\u660e\u8bbe\u5907\u786e\u5df2\u505c\u7535\uff0c\u5219\u8981\u53ca\u65f6\u88c5\u8bbe\u63a5\u5730\u7ebf\u3002\u88c5\u8bbe\u63a5\u5730\u7ebf\u7684\u987a\u5e8f\u662f\u5148\u63a5\u63a5\u5730\u7aef\uff0c\u518d\u5c06\u5176\u53e6\u4e00\u7aef\u901a\u8fc7\u63a5\u5730\u6746\u63a5\u5728\u505c\u7535\u8bbe\u5907\u88f8\u9732\u7684\u5bfc\u7535\u90e8\u5206\u4e0a(\u6b64\u65f6\u4eba\u4f53\u4e0d\u5f97\u63a5\u89e6\u63a5\u5730\u7ebf)\uff1b\u62c6\u9664\u63a5\u5730\u7ebf\u65f6\uff0c\u5176\u987a\u5e8f\u4e0e\u88c5\u8bbe\u65f6\u76f8\u53cd\u3002\u63a5\u5730\u7ebf\u987b\u7528\u4e13\u7528\u7684\u7ebf\u5939\uff0c\u8fde\u63a5\u7262\u56fa\uff0c\u63a5\u89e6\u826f\u597d\uff0c\u4e25\u7981\u7f20\u7ed5\u3002"]