【判断题】属于不同特征值的特征向量是线性无关的.( )
【判断题】矩阵A的不同特征值对应的特征向量必线性无关,反之,线性无关的特征向量必属于不同的特征值.
【多选题】下列几个项目阶段中,目前国内应用 BIM 理念和工具的阶段是()
【多选题】下几个项目阶段中,目前国内应用BIM理念和工具的阶段是()。2
【单选题】听力原文:Where did you get hurt, the ankle or the knees? (A) My words hurt my uncle. (B) I've heard from my uncle and niece. (C) I fell and twisted my ankles. (22)
【单选题】听力原文:W: I heard Dan twisted his ankle during basketball practice yesterday. M: I guess that explains why I sew him at the clinic. Q: What can we know about Dan? (16)
A.
He had a doctor examine his injury.
B.
He will go to practice tomorrow.
C.
He didn't call the woman yesterday.
D.
He asked a friend to take him to clinic.
【判断题】线性变换的属于不同特征值的特征向量是线性无关的。
【单选题】The ankle biter twisted his _____ when he jumped.