试题与答案

病人输液时，吊瓶距血管竖直高度1.2m，瓶中药液滴完后，药液在输液管中下降到距血

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题型：填空题

题目：

病人输液时，吊瓶距血管竖直高度1.2m，瓶中药液滴完后，药液在输液管中下降到距血管0.5m高时不再下降，则病人的血压为______．（ρ液=1.0×103kg/m3，取g=10N/kg）．针头的表面做得非常光滑，这是为了______以减轻病人的痛苦．若要提高输液速度，除了调节调节器外，还有一个简便的方法就是______．

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A, B, C

考点：液体压强的计算增大或减小摩擦的方法
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