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【单选题】
n 阶矩阵 A 与对角阵相似的充分必要条件是( )A.
矩阵 A 有 n 个特征值
B.
| A|≠０
C.
矩阵 A 的特征多项式没有重根
D.
矩阵 A 有 n 个线性无关的特征向量
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举一反三
【单选题】What does the woman want to do in Spring?
A.
Go skating.
B.
Fly a kite.
C.
Go skiing.
【单选题】What does the woman think of the Spring Festival?
A.
Interesting.
B.
Amazing.
C.
Boring.
D.
Exciting.
【简答题】96所谓()就是Word2010系统自带的或由用户自定义的一系列排版格式的总和,包括字符格式、段落格式等。
【单选题】What does fish symbolize in the Spring Festival?
A.
Harmony in the coming year.
B.
Abudance in the coming year.
C.
Staying healthy in the coming year.
【单选题】What does the man think of the spring in China?
A.
He likes it.
B.
He doesn't like it.
C.
He knows nothing about it.
【多选题】当代资本主义国家在社会阶层、阶级结构上出现的新变化有
A.
拥有所有权的资本家一般不再直接经营和管理企业
B.
高级职业经理成为大公司经营活动的实际控制者
C.
知识型和服务型劳动者的数量不断增加，劳动方式发生了新变化
D.
法人资本所有制崛起并成为居主导地位的资本所有制形式
【多选题】What does the Spring Festival mean to Chinese?
A.
It is a time for the family to be together.
B.
It is a time for the family to celebrate family unity.
C.
It is a time to honor dead ancestors.
D.
It is a time to discuss family roots and relationships.
【简答题】What happened when the first spring came? Of the two floods the author describes, what does the second one actually refer to?
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