[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fIezgt72xgGxq2EQk1OjFMgPelSCmUSqF9QrXd3QMqqA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":21,"type":22},[],"2023-10-28 15:33:22",102095429,[8,9,10,11],"长度L","温度Q","质量M","时间T",{"courseId":13,"courseImg":14,"courseName":15},"d4004a88936e784e4e4bb3d860e1a7fa","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Faf2c37fc1551a5431b5b0be4116dc7d6.jpg","流体力学2023","对于大多数流体力学问题,通常只需要哪些基本量纲",[18,23,32,41,51,60,69,77,86,95],{"answer":19,"createTime":5,"id":6,"options":20,"question":16,"source":21,"type":22},[],[8,9,10,11],"v1",1,{"answer":24,"createTime":5,"id":25,"options":26,"question":31,"source":21,"type":22},[],102095431,[27,28,29,30],"几何相似","运动相似并且动力相似","运动相似","动力相似","流动相似包括()",{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":21,"type":22},[],102095434,[36,37,38,39],"管道的倾斜度","管道的材质","管道入口状况","外界扰动情况","临界雷诺数Recr1、Recr2并非固定不变,它们与()有关",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":21,"type":50},[],102095436,[45,46,47,48],"ML-1T-2","ML-1T-1","ML2T-3","ML2T-2","动力粘度的量纲是什么",0,{"answer":52,"createTime":5,"id":53,"options":54,"question":59,"source":21,"type":50},[],102095439,[55,56,57,58],"r","n-r","n+r","n","定理认为,如果影响一个物理过程的变量有n个,r个基本量纲,那么这个物理过程可用一个包含( )个无量纲参数的原始方程来表示",{"answer":61,"createTime":5,"id":62,"options":63,"question":68,"source":21,"type":50},[],102095441,[64,65,66,67],"重复变量不一定要出现在所有π项中","无法确定","重复变量可以组成无量纲数","重复变量中应包含所有基本量纲,但这不是要求每个变量都包含所有基本量纲","下列选项错误的是( )",{"answer":70,"createTime":5,"id":71,"options":72,"question":68,"source":21,"type":50},[],102095443,[73,74,75,76],"模型流动与原型流动的初始条件必须相同","模型与原型中对应点上流体的物理性质(密度、黏度等)相似","模型与原型进口、出口截面处的速度分布相似","模型与原型的过流通道应几何相似",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":21,"type":50},[],102095446,[81,82,83,84],"Eu","St","Re","Ma","下列相似准则,不能从流动控制方程分析得到的是",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":21,"type":50},[],102095449,[90,91,92,93],"欧拉数","弗劳德数","雷诺数","马赫数","判断管内流动相似应最优先考虑的是下列哪个准则",{"answer":96,"createTime":5,"id":97,"options":98,"question":103,"source":21,"type":50},[],102095450,[99,100,101,102],"2300<Re<4000","Re<2300",">4000","以上都不对","如果管内流动处于湍流状态,那么雷诺数()"]