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]
A bimetallic strip, consisting of metal G on the w ln x1s8r7p1vtop and metal H on t rtrff1e/bofhnz ( xtm *,gsw3 d;7m1 *he bottom, is rigidly attached to a wall at the left. (See Fig. 13-1.) The coefficient of linear thermal expansion for metal G is greater than that of metal H. If the strip is uniformly heate zw/xt *odf m rsm3ff,1gh(t;7 1reb*nd, it will

A. curve upward.
B. curve downward.
C. remain horizontal, but get longer.
D. bend in the middle.
参考答案: B
本题详细解析:
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