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华北水利水电大学英语
已知n阶方阵A和某对角阵相似，则（）
·A有n个不同特征值
·A一定是n阶实对称阵
·A有n个线性无关的特征向量
·A的属于不同的特征值的特征向量正交
·AB正定
·
·
·KA正定
下列说法正确的是（）
·
·
·
·
·合同且相似
·合同但不相似
·不合同但相似
·不合同且不相似
·
·
·
·
·
·
·
·
I am _____ go and nothing will stop me.
·determine to
·determining to
·determined to
·determinatioto
Cells do not have _____ of their own.
·intelligence
·intelligent
·intention
·intellectual
To him, music is _____ a way of life_____ just ainterest.
·more…than
·as…as
·not…as
·less…than
I became a teacher because I _____ books to business.
·wanted
·liked
·preferred
·had
It suddenly _____ to me that we could use a computer to do the job.
·happened
·occurred
·agreed
·presented
The changes are aimprovement _____ .
·iway
·ithe way
·ia way
·by a way
She has a _____ interest ieverything around her.
·lively
·alive
·live
·living
She did me such a big favor._____ I knew her name.
·if
·only
·if only
·only just
They refused to _____ that they were defeated.
·knowledge
·acknowledge
·aware
·awake
·A有n个不同特征值
·A一定是n阶实对称阵
·A有n个线性无关的特征向量
·A的属于不同的特征值的特征向量正交
·AB正定
·
·
·KA正定
下列说法正确的是（）
·
·
·
·
·合同且相似
·合同但不相似
·不合同但相似
·不合同且不相似
·
·
·
·
·
·
·
·
I am _____ go and nothing will stop me.
·determine to
·determining to
·determined to
·determinatioto
Cells do not have _____ of their own.
·intelligence
·intelligent
·intention
·intellectual
To him, music is _____ a way of life_____ just ainterest.
·more…than
·as…as
·not…as
·less…than
I became a teacher because I _____ books to business.
·wanted
·liked
·preferred
·had
It suddenly _____ to me that we could use a computer to do the job.
·happened
·occurred
·agreed
·presented
The changes are aimprovement _____ .
·iway
·ithe way
·ia way
·by a way
She has a _____ interest ieverything around her.
·lively
·alive
·live
·living
She did me such a big favor._____ I knew her name.
·if
·only
·if only
·only just
They refused to _____ that they were defeated.
·knowledge
·acknowledge
·aware
·awake