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【单选题】
● n*n矩阵可看作是n 维空间中的线性变换，矩阵的特征向量经过线性变换后，只是乘以某个常数（特征值），因此，特征向量和特征值在应用中具有重要的作用。下面的矩阵 （其中 w1、 w2、 w3 均为正整数）有特征向量 （w1, w2, w3）， 其对应的特征值为（65）。 ( 65）A.
1/3
B.
1
C.
3
D.
9
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【单选题】The Bill of Rights .
A.
defines the rights of Congress and the rights of the President
B.
guarantees citizens of the United States specific individual rights and freedoms
C.
is part of the Declaration of Independence
D.
has no relationship with the Constitution
【单选题】The first 10 Constitutional Amendments ( the Bill of Rights) are about the fundamental rights of any American. Which of the following is NOT mentioned in the first 10 Bill of Rights?
A.
the freedom of religion
B.
the freedom of speech
C.
the freedom of the press
D.
the right to vote for every American
【单选题】Which of the following is NOT guaranteed in the Bill of Rights?
A.
The freedom of religion.
B.
The freedom of searching a person ’s home by police.
C.
The freedom of speech and of the press.
D.
The right to own weapons if one wishes.
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