本题目来源于试卷: Physics Unit14: Heat，类别为 国际高中通用物理
[单选题]
A layer of insulating material with thermal conductivity Kc ( f7xnyjag18 is placed oni98pam6b*yqszbd 4h.qu62z x a layer of another material of thermal conductivity 2K. The layers have equal thickness. What is the effective thermal conductivity of the x q6zmqab*h4 b6z2 8.d9uypi scomposite sheet?
A. $3 \; K$
B. $1.5 \; K$
C. $K/3$
D. $2K/3$
参考答案: D
本题详细解析:
暂无
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