問題詳情
45.塑膠板所受的水壓為多少？______gw/cm2
(A)20
(B)30
(C)40
(D)50
(A)20
(B)30
(C)40
(D)50
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
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