本题目来源于试卷: Physics Unit13: Temperature and Kinetic Theory，类别为 通用国际物理
[单选题]
Consider a flat steel plate with a hol jchlj- 4odv.zh -ie+)e q ze9v99scf4 jthrough its center as shown in Fig. 13-2. When the plate's temperature is increased, the hole s9czjq 99ev4f 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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