按规定检查所有的延长线，使其处于良好的状况。在缠绕存放电线之前，应当先切断电源。

All extension cords should be checked regularly and kept in good condition. Cord should be disconnected from power source before coiling for storage.

youdao

按规定检查所有的延长线，使其处于良好的状况。在缠绕存放电线之前，应当先切断电源。

All extension cords should be checked regularly and kept in good condition. Cord should be disconnected from power source before coiling for storage.

youdao