【简答题】脉冲响应不变法和双线性变换法在IIR数字滤波器的设计中起什么作用?试比较它们的优缺点。
【简答题】两个做平面平行运动的构件之间所形成的()接触的运动副称为低副;而构件之间为()或()接触的运动副称为高副。
【简答题】两个做平面运动的构件之间为 接触的运动副称为高副,一个高副引入 约束。
【简答题】设β 1 ,β 2 是非齐次线性方程组Ax=b的两个不同解,α 1 ,α 2 是对应齐次方程组Ax=0的基础解系,k 1 ,k 2 为任意常数,则方程组Ax=b的通解是
【判断题】设 是非齐次线性方程组Ax=b的两个不同的解,则 是Ax=0的。
【单选题】Sub-points are used to support the main points directly.
【多选题】What are the main points in the first paragraph in the TEM-4?
A.
The main points of the given information
B.
Your own points of view
【单选题】According to your textbook, what is the most important reason for limiting the number of main points in a speech?
A.
It is hard to maintain parallel wording if there are too many main points.
B.
It is hard to phrase the central idea if a speech has too many main points.
C.
It is hard to organize supporting materials if there are too many main points.
D.
It is hard for the audience to keep track of too many main points.