問題詳情

31.F=ma, known widely as Newton's second law,_a postulate of physics since the advent ofNewton's masterful Principia in 1687.
(A) is
(B) having been
(C) being
(D) has been

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)