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【简答题】
已知三阶方阵A的特征值为1,2,-1,且 ,则B的特征值为 .
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反馈参考答案：
举一反三
【单选题】When we finally ______ to get home after the tiring long journey, we could hardly move a step further. [ ]
A.
tried
B.
succeeded
C.
managed
D.
attempted
【单选题】When we finally ______ to get home after the tiring long journey, we could hardly move a step further. [ ]
A.
tried
B.
succeeded
C.
attempted
D.
managed
【单选题】We had to __________a lot of noise when the children were at home.
A.
go in for
B.
hold on to
C.
put up with
D.
keep pace with
【单选题】—When did you get home last night? —It was almost midnight ________ we arrived home.
A.
that
B.
before
C.
since
D.
when
【简答题】When we finally managed A(to get home) after the B(tiring) long journey, we could C(not hardly) move a step D(further).
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