【单选题】![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/logo-new-ad743.png)
两个水箱用两段不同直径的管道连接,如图所示,1—3管段长l 1=10m,直径d 1=200mm,λ 1=0.019;3—6管段长l 2=10m,d 2=100mm,λ 2=0.018。管路中的局部管件:1为入口(ξ 1=0.5);2和5为90°弯头(ξ 2=ξ 5=0.5);3为渐缩管(ξ 3=0.024);4为闸阀(ξ 4=0.5);6为管道出口(ξ 6=1)。若输送流量为40L/s,则两水箱水面高度差为( )。
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAA5ElEQVRYR2NkGGDAOMD2M+B0wKpVq9huv/jbxPD/fxwDA4MkhQ59zsDIuEhVgrkuLCzsF7JZOB3QOml5B8P//+UUWoyqnZGxszovsoI4B0xc9gyfzxmZmb2rcsK3IRvWMWm599///7fgcfTz6vwoKWId8B+f75kZGX0q8iK3kugAhur8KJRQxx0FE5fhdQC5UTPqgNEQGA2B0RAYDYHREBgNgaETAuTW96TqG7yt4tbRFhGRIQBqHTP9+8dIoDUMTxqk5AK8zXKYiaDWMYhNpANIaJYPdMdkwLtmpOZnctUPeDkAAP6tmiH1ggTLAAAAAElFTkSuQmCC)
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参考答案:
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参考解析:
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