发布时间:2025-01-31 04:53:08
可以使用一个简单的图标来表示。这种插座需要额外的电源线,图例中需要显示一个单独简单的图标来显示电源线接入插座。电源线需要画在图示上,以便看到与插座的连接。将电源线连接到适当的电源来源,在图中表示为一个圆圈或星形符号。
从社会交换理论出发看美国黑人男性经常娶白人女性而白人男性很少娶黑人女性如何解释
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