將鬧鈴放入一個玻璃鐘罩，通電使鐵鎚擊鬧鈴時，再開啟抽氣機把玻璃鐘罩中的空氣逐漸抽出，試問下列敘述何者正確？ (A)聲音愈來愈小 (B)聲音愈來愈大(C)聲音愈來愈高 (D)聲音愈來愈低。

問題詳情

3.將鬧鈴放入一個玻璃鐘罩，通電使鐵鎚擊鬧鈴時，再開啟抽氣機把玻璃鐘罩中的空氣逐漸抽出，試問下列敘述何者正確？

(A)聲音愈來愈小
(B)聲音愈來愈大
(C)聲音愈來愈高
(D)聲音愈來愈低。

參考答案

答案：A
難度：計算中-1
書單：沒有書單，新增

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