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【单选题】
设向量组 有两个极大无关组 , 则有( )A.
和 不一定相等
B.
两个极大无关组可以互相线性表示
C.
r+s=m
D.
r+s
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【单选题】A University of Versailles student may take course work at another institution of higher education as a transient student. For all courses other than general studies, the student must obtain prior wri...
A.
The technological revolution will provide adequate employment opportunities for school leavers if it continues to have its effects.
B.
Those who undergo the pressure at work are usually the unskilled workers and labor workers with dull and repetitive jobs.
C.
We must discover some methods to instruct people how to deal with their spare time in order to release the stress of unemployment.
D.
The dullness and upset of unemployment are only part of the causes of people's pressure and frustration.
【单选题】The bank ______another branch in Houston within the next year.
A.
opened
B.
will be opening
C.
have opened
D.
would open
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