[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fEdH4rB2f7JlrDb8PTo6NjT6MdqX3687ngbsKFt4Gdow":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2024-09-26 18:00:45",160286281,[8,9,10,11],"一次方","二次方","四次方","五次方",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},14,"62f46f8176811602ff1967bc88e9e0e8","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0994584bc7e6e2f717cd827c3be8bdb4.jpg","化工原理","work_37059055","流体流动6(阻力的计算)副本","流体在圆形管道内进行层流流动时,如果流量一定,则能量损失与管径的( )成反比",[21,32,35,44,50,58,66,75,84,93],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],160286280,[25,26,27,28],"Um=1\u002F2Umax","Um&asymp;0.8Umax","Um=3\u002F2Umax","Um=0.6Umax","若流体流动为湍流时,平均流速与管中心的最大流速的关系为( )","v1",0,{"answer":33,"createTime":5,"id":6,"options":34,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":30,"type":31},[],160286282,[39,40,41,42],"管径的一次方","管径的二次方","管径的四次方","管径的五次方","流体在圆形管道内进行湍流流动且在阻力平方区时,如果流量一定,则能量损失与管径的( )成反比",{"answer":45,"createTime":5,"id":46,"options":47,"question":49,"source":30,"type":31},[],160286283,[8,10,11,48],"不确定","流体在圆形管道内进行流动时,如果流量一定,则能量损失与管径的( )成反比",{"answer":51,"createTime":5,"id":52,"options":53,"question":57,"source":30,"type":31},[],160286284,[54,55,56,48],"增大","减小","不变","当管子由水平放置改为垂直放置时,其他条件不变,其能量损失( )",{"answer":59,"createTime":5,"id":60,"options":61,"question":65,"source":30,"type":31},[],160286285,[62,63,64,48],"滞流","过渡流","湍流","圆管的摩擦系数&lambda;=64\u002FRe的适用流型是( )",{"answer":67,"createTime":5,"id":68,"options":69,"question":74,"source":30,"type":31},[],160286286,[70,71,72,73],"1kg","1N","1m","1\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F02e15edcd74751903e744a135c8deb88.webp\">","u2\u002F2的物理意义是表示流动系统某截面处( )流体具有的动能",{"answer":76,"createTime":5,"id":77,"options":78,"question":83,"source":30,"type":31},[],160286287,[79,80,81,82],"Hf &gt;hf","Hf =hf \u002Fg","Hf = Wf","Hf = ghf","如单位质量流体在管路中的阻力损失以hf表示,单位重量流体在同一管路中的阻力损失以Hf 表示,则二者的关系为 ( )",{"answer":85,"createTime":5,"id":86,"options":87,"question":92,"source":30,"type":31},[],160286288,[88,89,90,91],"仅适用于层流","仅适用于湍流","既适用于层流,也适用于湍流","适用场合还应视管子的相对粗糙度而定","计算直管内流动阻力的范宁公式( )",{"answer":94,"createTime":5,"id":95,"options":96,"question":101,"source":30,"type":31},[],160286289,[97,98,99,100],"管子竖直放置,流体由上向下流动","管子倾斜45度角放置,流体由下向上流动","管子水平放置","那三种放置方式,阻力损失一样大","流体在直管内的流动阻力损失,在如下哪种情形时最大( )"]