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问题 判断题

机动泵和手动泵在30度的倾斜面上也可以正常工作。

答案

参考答案：对

选择题
_____ in a recent science competition, the three students were awarded scholarships totaling ＄21,000.

A. To be judged the best
B. Judged the best
C. Having judged the best
D. Judging the best
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判断题

沪深300指数成分股的选择对样本空间股票在最近1年（新股为上市以来）的日均成交金额由高到低排名，剔除排名后60%的股票。（）
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