【多选题】【消耗次数：1】
关于材料的导热系数，以下正确的是（）。
①
A容重轻，导热系数小
②
B含水率高，导热系数大
③
C孔隙不连通，导热系数大
④
D固体比空气导热系数大
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相关题目
【多选题】
绝热材料的导热系数与含水率的不正确关系是（）。
①
A含水率越大，导热系数越小
②
B导热系数与含水率无关
③
C含水率越小，导热系数越小
④
D含水率越小，导热系数越大
【简答题】
水的导热系数_____ 密封空气的导热系数，所以材料吸水后的绝热性能降低。
【简答题】
什么是材料的导热性？材料导热系数的大小与哪些因素有关？
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