a片吧

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                配電屏上每個電氣回路應設◥置漏電保護器、過載保能耐護器,距配電屏2m 範圍內不應堆放可燃物,( )範圍內不應設置可能產生較多易燃、易爆氣體、粉塵的话作業區。

                • A1m
                • B2m
                • C3m
                • D5m
                參考答案: D