问题
单项选择题
材料保温隔热性能的好坏由材料的（）决定。
A．蓄热系数
B．导热系数
C．体型系数
D．传热方式
答案
参考答案：B
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材料保温隔热性能的好坏由材料的（）决定。
A．蓄热系数
B．导热系数
C．体型系数
D．传热方式
参考答案：B
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