【判断题】检验以下集合对于所指的线性运算是否构成实数域上的线性空间: 设A是一个n×n实数矩阵,A的实系数多项式f(A)的全体,对于矩阵的加法和数量乘法;
【简答题】主销内倾的功用是使转向轮自动回正,并使 操作轻便。
【简答题】主销后倾的功用是使汽车转向后 操作轻便。
【判断题】尺寸界线用来限定所注尺寸的范围,尺寸界线应用细实线绘制
【单选题】Talking about the training she has received, a recently employed graduate has the view that ______.
A.
it is still well-received by all the staff members today
B.
it is valuable to the employers and the employees
C.
it is helpful for attracting young employees
D.
it is both useful and interesting