40 卷尺 D 端下移導致卷尺傾斜 θ= 3°，如下圖所示，PC 是水平線，如果卷尺量距 PD= 00 m，則 A、B 兩點的正確水平距 PC 為多少公尺？ (A)99(B)98(C

問題詳情

40 卷尺 D 端下移導致卷尺傾斜 θ= 3°，如下圖所示，PC 是水平線，如果卷尺量距 PD= 30.00 m，則 A、B 兩點的正確水平距 PC 為多少公尺？

(A)29.99
(B)29.98
(C)29.97
(D)29.96

參考答案

答案：D
難度：非常困難0
統計：A(1),B(2),C(2),D(0),E(0)

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