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【简答题】
已知 A 是矩阵,求 A 的对角矩阵函数是 _______ , 求 A 的下三角矩阵函数是 ______ 。
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举一反三
【单选题】I asked the man in the ticket office if I could have two tickets, but he answered sharply “No!” and shut the window in my face. This was a terrible blow to my dignity ;...
A.
谦虚
B.
荣誉
C.
自尊心
D.
名声
【单选题】Some people claim that nuclear energy is essential because ______.
A.
it provides a perfect solution to mass unemployment
B.
it represents an enormous step forward in our scientific evolution
C.
it can meet the growing demand of an industrially developing society
D.
nuclear power stations can be run and maintained by relatively few technical and adadministrative staff
【简答题】Some people claim that nuclear energy is essential because ________. A) it provides a perfect solution to mass unemployment B) it represents an enormous step forward in our scientific evolution C) it ...
【单选题】Woman: I heard there was a terrible mine accident. They didn't want anyone to know. Man: I think it is impossible to black out this news. Question: What does the man mean?
A.
It is impossible to keep it out.
B.
It is impossible to know it.
C.
It is unlikely to prevent it from being known.
D.
It is unlikely to stop spreading the news.
【简答题】There was a terrible rainstorm unexpectedly. The rain caused the streets 36 and the subway system almost came to a stop. Unfortunately, this happened during the morning rush hour. Many people who were...
【单选题】This was a terrible news and the little boy is still very _________.
A.
shocked
B.
excited
C.
disappointed
D.
interested
【单选题】I asked the man in the ticket office if I could have two tickets, but heanswered sharply “No!” and shut the window in my face. This was a terrible blowto my dignity ;...
A.
谦虚
B.
荣誉
C.
自尊心
D.
名声
【简答题】put in the appropriate expression to complete each of the following sentences.
【单选题】Some people claim that nuclear energy is essential because______.
A.
it provides a perfect solution to mass unemployment
B.
it represents an enormous step forward in our scientific evolution
C.
it can meet the growing demand of an industrially developing society
D.
nuclear power stations can be run and maintained by relatively few technical and administrative staff
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