试题与答案

如右图所示,弹簧测力计下面悬挂一个重8N的物体。当把物体浸没在水中时,弹簧测力计

题型:计算题

题目:

如右图所示,弹簧测力计下面悬挂一个重8N的物体。当把物体浸没在水中时,弹簧测力计示数变为6N,此时圆柱形容器内水的高度为0.2m(g=10N/kg)。求:

(1)物体受到水的浮力多大?

(2)物体的体积为多大?

(3)当物体浸没在水中时,水对容器底部的压强为多大?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析:抗人球蛋白试验(Coombs试验)阳性提示温抗体型自身免疫性溶血性贫血。酸溶血试验(Ham试验)是阵发性睡眠性血红蛋白尿的特弹性血清学试验,其特异性高,但敏感性差,是诊断的重要依据。

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It often happens that a number of applicants with almost the same qualifications and experience all apply for the same position. In their educational background, special skills and work experience, there is little, if anything, to choose between half a dozen candidates. How then does the employer make a choice? Usually on the basis of an interview.

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