電工在現場最常做的心算，就是看瓦數估電流。5 題一回合，答對 4 題過關。選好國家，題目會用當地電壓出題。
心算練好了，下一步是考照：用你選的國家做一回電工模擬考。
登入會員在網站上過關，每天第一次可以得到 5 學習點數。
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