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2018-02-11View Original

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参与:奖3财富;回答正确:奖10财富;注:48小时内回答正确奖励10财富,此贴有效时间48小时。 选择题 :没有转动部件的泵是()。 A 磁力驱动泵 B 液压隔膜计量泵 C 射流泵 D 旋涡泵 正确答案:C 射流泵 射流泵也称水射器,基本结构由喷嘴,吸入室,混合管以及扩散管等部分所组成。构造简单,工作可靠,在给排水工程中经常应用。射流泵工作的机理是利用湍射流的紊动扩散作用来达到传质、传能的目的。即速度较高的工作流体从喷嘴射出,在喉管内被吸流体相互掺混,彼此流体质点或微团间发生动量、热量和质量交换,从而使二者的质量和动量趋于一致。 https://attach01.hcbbs.com/forum/201801/05/235057wnwxbzxb311ikvvz.jpg.thumb.jpg

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