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5.目前所採用的長度定義,係以何種方式來標定?(A)以手臂長度為一公尺 (B)光在真空中於299,792,458分之一秒所走的距離為一公尺 (C)以鉑銥合金公尺原器為一公尺 (D)以子午線長度的四千萬
問題詳情
5.目前所採用的長度定義,係以何種方式來標定?
(A)以手臂長度為一公尺
(B)光在真空中於299,792,458分之一秒所走的距離為一公尺
(C)以鉑銥合金公尺原器為一公尺
(D)以子午線長度的四千萬分之一為一公尺。
參考答案
答案:B
難度:適中0.5625
統計:A(0),B(9),C(3),D(4),E(0)
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