本题目来源于试卷: Physics Unit14: Heat，类别为 通用国际物理
[单选题]
A layer of insulatin04vbpxx - eogd 9bj-,vg material with the+9 iij;pylsomtl .2b/rmal conductivity K is placed on a layer of another material of thermal conductivi . o2plt+;biml9/isy jty 2K. The layers have equal thickness. What is the effective thermal conductivity of the composite 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
| 
