(单选题)20: The hero’s story ______ in different news-papers. A: was reported B: was reporting C: reports D: reported ...
(单选题)14: The teacher asked us ____ so much noise. A: don’t make B: not make C: not making D: not to make ...
(单选题)8: The mother together with her sons ______ asked to go to the court. A: are B: have C: were D: was ...
(单选题)2: Mr. Smith was determined to _____ the experiment after so many years’ interruption. A: carry on B: carry out C: carry away D: carry forth ...
(单选题)16: If it ______, we shall stay at home. A: rained B: rain C: rains D: will rain ...
(单选题)10: You're ________ too heavy. You have to eat less food. A: a few B: a little C: some D: any ...
(单选题)4: The train, _______ goes to Tianjin, is air-conditioned. A: whom B: what C: which D: who ...
(单选题)18: 轴向拉、压杆横截面上正应力的应用条件是( )。 A: 应力必须低于比例极限 B: 杆件截面形状必须是圆形或矩形 C: 件必须是小变形 D: 件必须是等截面直杆 ...
(单选题)8: 质点动力学基本方程为( )。 A: W=FS B: P=MV C: I=FT D: F=ma ...
(单选题)2: 下列说法中不正确的是( )。 A: 力使物体绕矩心逆时针旋转为负 B: 平面汇交力系的合力对平面内任一点的力矩等于力系中各力对同一点的力矩的代数和 C: 力偶不能与一个力等效也不能与一个力平衡 D: 力偶对其作用平面内任一点的矩恒等于力偶矩,...