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 plate with a hole *fdad8i9s7be nxzb72 through its center as shown in Fig. 13- qb3rws47 g-s+dmd( ah2. When the plat s7-h+4 qwam rdgdb(3s e's temperature is increased, 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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