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日々の質問 2018.1.30

2018-01-30View Original

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湿気の多い場所や機器のコンテナ、または特に危険な場所で作業する場合、照明ランプの安全電圧は ( ) です。 A. 32V B. 24V C. 12V D. 6V 答え:C
Reply #22018-01-30
湿気の多い場所や機器コンテナ、または特に危険な場所で作業する場合、照明ランプの安全電圧は (C) です。 A、32V B、24V C、12V D、6V
Reply #32018-01-31
湿気の多い場所や機器コンテナ、または特に危険な場所で作業する場合、照明ランプの安全電圧は (C) です。 A、32V B、24V C、12V D、6V

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