Check light bulbs, electrical power, cable connections, outlets and contacts, switches and any moving parts;

检查电灯、电源、线路的连接、插座和接触器、开关以及一切移动部件；

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Check light bulbs, electrical power, cable connections, outlets and contacts, switches and any moving parts;

检查电灯、电源、线路的连接、插座和接触器、开关以及一切移动部件；

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