请勿使壁装电源插座，延长线或一体式便利插座过载。
Do not overload wall outlets, extension cords, or integral convenience receptacles.
MIT之所以选择电源插座是因为插座无处不在，而且插座带电，可以连成网络。
MIT chose to use power strips "because they are already ubiquitous in offices and homes," plus they have power and can be connected to a network.
电源插座符号。可指定插座类型。
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