[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f5xX_k4e_AQviUKmxjaDT5ofoWgJE5CvQt9GotcQIrZk":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-11-05 11:19:39",103015966,[8,9,10,11],"直线,常数","曲线,常数","直线,非常数","曲线,非常数",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},15,"582f72736796fa7a4f2ed766ebfc6d3f","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F25b30343053994e8940089572d36015b.jpg","传热学","72758fcdb7c74ec798c73c7c2f6524f1","导热练习题","通过稳态有内热源(内热源为定值)的大平壁的导热,其内的温度分布为 ,热流密度为",[21,32,35,44,53,62,71,81,90,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],103015962,[25,26,27,28],"冰","液态水","水蒸气","冰水混合物","按照导热机理,水在 状态下的导热系数最大","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},[],103015968,[39,40,41,42],"结霜的冰箱","未结霜的冰箱相同","结霜的冰箱和未结霜的冰箱相同","无法判断","在同一冰箱储存相同的物质时,耗电量大的是",{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":30,"type":31},[],103015969,[48,49,50,51],"0.2","0.12","0.02","0.18","凡平均温度不高于350℃、导热系数不大于 W\u002FmK的材料称为保温材料",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":30,"type":31},[],103015970,[57,58,59,60],"温度不随时间变化","温度不随时间和空间位置变化","温度不随空间位置变化","温度在各点值相等","稳态导热是指",{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":30,"type":31},[],103015971,[66,67,68,69],"柱坐标下一维无内热源的不稳态导热微分热方程","柱坐标下一维无内热源的稳态导热微分热方程","柱坐标下一维有内热源的不稳态导热微分热方程","柱坐标下一维有内热源的稳态导热微分热方程","物性参数为常数的一圆柱导线,通过的电流均匀发热,导线与空气间的表面传热系数为定值,建立导线的导热微分方程采用",{"answer":72,"createTime":73,"id":74,"options":75,"question":80,"source":30,"type":31},[],"2023-11-05 11:19:40",103015972,[76,77,78,79],"25℃\u002Fm,方向垂直于外墙,指向室内","25℃\u002Fm,方向垂直于外墙,指向室外","100℃\u002Fm,方向垂直于外墙,指向室外","100℃\u002Fm,方向垂直于外墙,指向室内","有一房间,外墙厚度400mm,室内墙表面温度为25℃,室外墙表面温度-15℃,则外墙的温度梯度为",{"answer":82,"createTime":73,"id":83,"options":84,"question":89,"source":30,"type":31},[],103015973,[85,86,87,88],"将导热系数大的材料放在内侧,则保温效果好","将导热系数小的材料放在内侧,则保温效果好","无论怎么放,保温效果一样","无法确定","炉墙平壁用两层同样厚度的保温材料保温,两种材料的导热系数不同,假设材料导热系数为常数",{"answer":91,"createTime":73,"id":92,"options":93,"question":97,"source":30,"type":31},[],103015974,[94,95,96,88],"将导热系数小的放在内侧,则保温效果好","将导热系数大的放在内侧,则保温效果好","无论怎么放置,保温效果都一样","热力管道外用两层厚度相同的保温材料保温,两种材料的导热系数不同,假设材料导热系数为常数",{"answer":99,"createTime":73,"id":100,"options":101,"question":106,"source":30,"type":31},[],103015975,[102,103,104,105],"棉被中蓄存了热量,晚上释放出来了","棉被内表面的表面传热系数减小了","棉被变厚了,棉被的导热系数变小了","棉被外表面的表面传热系数减小了","冬天时节,棉被经过白天晾晒,晚上人盖着感觉暖和,是因为"]