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11.在氣溫為 10℃的夜晚,將一塊寬為 12 公尺的黑色金屬平板放置於寬度相同的空屋地板上。到了白天,當氣溫上升至 30℃,此平板因溫度變化而膨脹,若平板一端仍維持在地板上,而另一端卡在牆壁離地面
問題詳情
11.在氣溫為 10℃的夜晚,將一塊寬為 12 公尺的黑色金屬平板放置於寬度相同的空屋地板上。到了白天,當氣溫上升至 30℃,此平板因溫度變化而膨脹,若平板一端仍維持在地板上,而另一端卡在牆壁離地面 5 公尺處,如圖(五)所示,則此金屬平板的線膨脹係數為何(1/℃)?
(A)1/50
(B)1/120
(C)1/130
(D)1/240
參考答案
答案:D
難度:困難0.35
統計:A(1),B(6),C(4),D(7),E(0)
上一篇 :
12 My car wouldn’t start this morning, and then I realized the battery was_______ .(A) empty (B) low
下一篇 :
154. 按下喇叭按鈕,喇叭不響的可能原因為 (A)繼電器白金接點黏住(B)喇叭按鈕短路(C)喇叭線圈通電時間過長(D)喇叭白金接點黏住。
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