发布时间:2025-01-31 17:06:37
如果只要负12V可以把那个短路片接在绿色与红色接线柱上,这时红色为参考地。反接就是负12V。希望能帮上你。有问题可以追问。
学校图书室有9个书架每个三层每层可存放书刑200本图书室一共可以存放书刊多少本
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