問題詳情
23.一桶子內裝密度0.8g/cm3的酒精，深200cm，在液面下150cm處，有一面積為3cm2的小洞，欲用力擋住以免酒精流出，至少須用力多少gw？
(A)360gw
(B)480gw
(C)600gw
(D)720gw。
參考答案
無參考答案
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