【多选题】在开题报告中,科研结果的预期目标是?
A.
大多数时候应该是根据已经掌握的知识的合理外推
【简答题】一质点同时参与两个在同一直线上的简谐振动,振动方程为 试分别用旋转矢量法和振动合成法求合振动的振动幅和初相,并写出谐振方程。
【简答题】What did the
old lady do when she was a kid? prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>A. She
climbed the trees and spent her days outdoors. prefix="o" ns="urn:schemas-mic...
【单选题】What did the old lady do when she was a kid!
A.
She climbed trees and spent her days outdoors.
B.
She wore her hair in a ponytail.
C.
She put on her lipstick and talked on the phone constantly.
D.
She quarreled with her parents frequently.
【简答题】What did the hot dog vendor do with the coins the old lady gave him?
【简答题】What did the doctor do first with the lady? [A] He listened to her lungs and heart. [B] He took her temperature. [C] He examined her throat.
【简答题】一弹簧振子沿Ox轴作简谐振动,已知t=0时弹簧振子P的运动状态如下所述,试用旋转矢量法确定其相应的初相,并用解析法求出下述(3)态的初相: (1)振子P在正最大位移处; (2)振子P在平衡位置,向负方向运动; (3)振子P在 处,向负方向运动; (4)振子P在 处,向负方向运动; (5)振子P在 处,向正方向运动.
【单选题】“博学而笃志,切问而近思,仁在其中矣”这一名句出自()