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【单选题】
原问题与对偶问题都有可行解,则
A.
原问题有最优解,对偶问题可能没有最优解
B.
原问题与对偶问题可能都没有最优解
C.
可能一个问题有最优解,另一个问题具有无界解。
D.
原问题与对偶问题最优解。
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参考答案:
举一反三
【单选题】The best way to fight against gangs is to
A.
form. gang-like groups fighting gangs.
B.
have more angels to protect our children.
C.
change the existing forms of propaganda.
D.
organize the forces, especially police.
【简答题】Titanic is one of the best mo____ I have ever seen.
【单选题】It's almost the end of summer for the first annual contest to choose the best operating monopoly in America. Five contestants are selected. Each exhibits fine monopolistic characteristics and is worth...
A.
Fine monopolistic characteristics.
B.
Large flows of revenues and high wage rates.
C.
Its control over First Class mail prescribed by the Constitution.
D.
The longest-running monopoly.
【单选题】创建程序时,填写的Application Name表示
A.
系统名称
B.
项目名称
C.
项目的包名
D.
类的名字
【单选题】According to the passage, the floor of the Black Sea can best be compared to a
A.
rapidly moving conveyor belt.
B.
slowly settling foundation.
C.
rapidly expanding balloon.
D.
violently erupting volcano.
E.
slowly eroding mountain.
【单选题】The author believes that rote rehearsal is ______.
A.
the best way to remember something
B.
more efficient than chunking
C.
ineffective in the long run
D.
an unnecessary interruption
【单选题】The book _____ by Mo Yan is a best seller.
A.
had written
B.
to be written
C.
being written
D.
written
【单选题】The famous director Steven Spielberg, who directed the film 'Munich' nominated for best motion picture, is an Israeli.
A.
Y
B.
N
C.
NG
【单选题】创建程序时,填写的Package Name表示
A.
应用名称
B.
项目名称
C.
项目的包名
D.
类的名字
【单选题】以下关于避免失败者的说法错误的是 。
A.
其动机系统中避免失败的成分多于追求成功的成分;
B.
倾向于选择容易的任务;
C.
倾向于选择成功概率为50%的任务;
D.
倾向于选择极其困难的任务
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