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47. 滑輪是何種簡單機械之延伸應用?(A)摩擦輪 (B)齒輪 (C)斜面 (D)槓桿。
問題詳情
47. 滑輪是何種簡單機械之延伸應用?
(A)摩擦輪
(B)齒輪
(C)斜面
(D)槓桿。
參考答案
答案:D
難度:
簡單
0.8
書單:
沒有書單,新增
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10. 下圖為 25 °C 時,0.10 M NaOH(aq) 滴定弱酸 HA( )20 mL 之滴定曲線,下列敘述何者正確? (A) a 點之 pH 值為 3.1 (B) b 點之 pH 值為 4.
下一篇 :
48. 連桿機構所需的機件數至少為多少個?(A)2 (B)3 (C)4 (D)6。
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