【简答题】The first paragraph is mainly about ________. A) the agers’ criticism of their parents B) misunderstandings between agers and their parents C) the dominance of the parents over their children ...
【单选题】头后部出血可用两只手的拇指压迫耳后与枕骨粗隆之间的枕动脉搏动处。()
【单选题】下列关于力偶的说法正确的是()
B.
力偶对刚体既有改变旋转运动的作用,也有平移的作用
C.
力偶可以进一步简化为一个合力,所以力偶不是力学中的一个基本量
【简答题】In the second paragraph, the author mainly concentrates on the( ) [A] tendency of American economy [B]contribution American households have made to the economy [C]low efficiency of the government [D]p...
【单选题】下列关于力偶说法不正确的是()。
C.
力偶对物体的转动效应与其在平面内的位置无关。
【简答题】In the first paragraph of this article, the authors mainly discuss the importance of finding a good study______.