设A为3阶矩阵,为 A 的属于特征值1的线性无关的特征向量,为A的属于-1的特征向量,则的可逆矩阵P为()
D
In some schools children who prefer to read books rather than ________ football become social outcasts (被抛弃者 ).
意大利人文主义者莱奥纳尔多·布鲁尼的代表作是 ()
He asked me whether my brother ________ (fly) to Beijing.
用和平赎买的方法对 _________进行改造。
当x→0时,与根号x等价的无穷小量是()