问答题

阿基米德原理的适用范围是

答案：正确答案：适用于气体和液体

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单项选择题

An academic definition has three compulsory components (1) a term to be defined; (2) the general class that the target term belongs to; (3) the differentiating features of the target term. Please identify to which categories the underlined part is in the following definition.Barometer is a meteorological instrument used for the measurement of atmospheric pressure.
A、A term to be defined;
B、The general class that the target term belongs to;
C、Differentiating features of the target term;
D、/

一捆棉花和一块铁，在空气中称得它们的重相等，若将它们放在真空中称量，则：

答案：正确答案：棉花的重大于铁块的重