問題詳情
27. 下列敘述何者有誤？
(A)二力或數力之合成可產生無數個合力
(B)凡僅有大小，而無方向之量，稱為純量
(C)凡有大小，兼具方向之量，稱為向量
(D)物體受外力作用，其形狀大小不變者稱為剛體
(A)二力或數力之合成可產生無數個合力
(B)凡僅有大小，而無方向之量，稱為純量
(C)凡有大小，兼具方向之量，稱為向量
(D)物體受外力作用，其形狀大小不變者稱為剛體
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