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【毎日のテーマ】【電気版20160904】

2016-09-04View Original

Thread Content

参加報酬:2富。正解者への報酬:9財富 電子計算機室の低圧配電システムでは、周波数50Hz、電圧220/380Vの( )方式の接地形態を採用すべきである。  A.IT  B.TN-S  C.TN-C  D.TN-C-S 正解:BD
Reply #22016-09-04
電子計算機室の低圧配電システムは、周波数50Hz、電圧220/380Vの(BD)方式の接地形態を採用すべきである。   A. IT  B. TN-S  C. TN-C  D. TN-C-S
Reply #32016-09-04
B.TN-S    D.TN-C-S
Reply #42016-09-04
B.TN-S;D.TN-C-S

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