题目内容

放大电路中的符号“^”表示接大地的“地”。

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refers to the oppositeness of meaning. Words that are opposite in meaning are called antonyms. It can be divided into gradable antonymy, complementary antonymy, converse antonymy or relational opposites.

相对孔径=焦距/有效接收孔径

陀螺稳定系统有两种基本作用,一是稳定作用,二是()作用

欧式家具最具代表的是美式殖民主义家具。

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