本题目来源于试卷: Physics Unit13: Temperature and Kinetic Theory，类别为 国际高中通用物理
[单选题]
Consider a flat steel r.5osz 4b xifz6wirpeo267(z plate with a hole through its center as show 9zv5 9zokq ia6n in Fig. 13-2. When the plate's temperature is incre 69qo ak5z 9vizased, the hole will
A. expand only if it takes up more than half the plate's surface area.
B. contract if it takes up less than half the plate's surface area.
C. always contract.
D. always expand.
参考答案: D
本题详细解析:
暂无
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