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 hole through its center as sho uk+ag,q3ai8z5 8im8 vmw k*yuwn in Fig. 13-2 q5 8,8*vwui83amugza +k y mikwe :mg+8;iy b,ciajv6. When the plate's tempe icaw8 ,v +;:gj6 emibyrature 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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