判断题

电磁式电子膨胀阀可分为直动型和减速型。

答案：错误

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单项选择题

A.
In a few minutes. B.
8:00. C.
9:00. D.
8:30.

2. The legends, Hua Xu bore Fu Xi and An Deng bore Shen Nong, happened in ______________.

答案： matriarchal society