It’s necessary to have some____ knowledge for this job.
A．electricB．electricalC．elctronD．electricity
B
詞義辨析題。A. electric        形容詞“帶電的”         B. electrical     形容詞“與電有關(guān)的C. elctron  名詞“電子”         D. electricity 名詞“電”句意：干這份工作掌握一些與電有關(guān)的只是是必要的。 根據(jù)語(yǔ)境選B
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