试述电网操作前应注意问题。
["\uff087\uff09\u6839\u636e\u68c0\u4fee\u5de5\u4f5c\u8303\u56f4\u548c\u5b89\u5168\u5de5\u4f5c\u7684\u89c4\u5b9a\uff0c\u505a\u5b89\u5168\u63aa\u65bd\u3002\uff081\u5206\uff09"]
试述电网操作前应注意问题。
["\uff087\uff09\u6839\u636e\u68c0\u4fee\u5de5\u4f5c\u8303\u56f4\u548c\u5b89\u5168\u5de5\u4f5c\u7684\u89c4\u5b9a\uff0c\u505a\u5b89\u5168\u63aa\u65bd\u3002\uff081\u5206\uff09"]