【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;
【单选题】设A是一个n×n实矩阵,A的实系数多项式 的全体,对于矩阵的加法和数量乘法,是否构成实数域上的线性空间?
【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
【单选题】上海某公司与英国客商以CIF术语达成出易,当出口方按约定将货物装运出口并缮制全套单据向买方要求付款时,获悉该批货物在海运途中遭遇暴风雨全部灭失,根据《2010通则》的相关规定,以下表述正确的是 。
C.
外商先付清货款,然后由我方出面向保险公司索赔
【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 employer and the employees
C.
it is helpful for attracting young employees
D.
it is both useful and interesting