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  3. Electrical energy may be divided into two components ______ as positive and negative.

Electrical energy may be divided into two components ______ as positive and negative.

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问题 Electrical energy may be divided into two components ______ as positive and negative.
选项 A、distinguished
B、specified
C、separated
D、indicated
答案B
解析 词义辨析题。distinguish 意为“区别，辨别出”，常用于词组 distinguish…from 或 distinguish between。specify 意为“指定，详细说明”；separate 意为“把……分开”，常用于词组 separate…from；indicate 意为“指示，指出；表明，预示”等。本句大意为：电可分为正负两极。
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