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【判断题】
无的邻接矩阵一定是对称的,有的邻接矩阵一定是不对称的 。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【简答题】一线性时不变连续时间系统是稳定系统的充分且必要条件是系统函数的极点位于 S 平面的 。
【简答题】She got married although her parents had not given hertheir _____. A. allowance B. consent C.permit D. appreciation
【单选题】Although they had made careful preparation, unexpected difficulties ________ in the course of their experiments. [ ]
A.
rose
B.
raised
C.
lifted
D.
arose
【简答题】Although the weather was very had, the buses still ran on ________. A) list B) plan C) schedule D) arrangement
【单选题】Although the end of the term was close ______, Jim had not completed all of the projects he had hoped to finish.
A.
on hand
B.
by hand
C.
at hand
D.
in hand
【简答题】Although he had looked through all the reference material on the subject, he still found it hard to understand this point and her explanation only _____ to his confusion. (A) extended (C) added (B) am...
【单选题】He forgave his wife although she had once had a ______affair with a poet.
A.
ruthless
B.
transient
C.
evil
D.
remarkable
【单选题】Although he had studied very hard, John had hope of passing the exam.()
A.
little
B.
any
C.
a little
D.
some
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