【单选题】已知三阶方阵A的特征值为1,-1,2,则方阵【图片】的行列式为
【判断题】对于 的 T 形截面梁,因为其正截面受弯承载力相当于宽度为 的矩形截面梁,所以其配筋率应按 来计算。
【简答题】三阶方阵A的特征值为1,-1,2,则【图片】的特征值为( )
【单选题】已知三阶方阵A的特征值为1,-1,2, 则矩阵【图片】的特征值为
【简答题】A.Because they are alike. B.Because the man's briefcase has a lock. C.Because the man's briefcase is smaller. D.Because she doesn't have a briefcase.
【判断题】正常情况下,人的发展具有顺序性,不能逾越,可以逆向发展。
【简答题】A.Because it serves only a few specialties. B.Because it's too crowded. C.Because it's too costly. D.Because the service is too slow.
【简答题】A.Because it serves only a few specialties. B.Because it's too crowded. C.Because it's too costly. D.Because the service is too slow.