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【单选题】
在可行解,通过各极点作与目标函数直线斜率相同的平行线,这些平行线称之为( )。A.
可行解
B.
可行域
C.
等值线
D.
最优解
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皮皮学刷刷变学霸
举一反三
【单选题】Why did the writer do some calculation?
A.
Because he didn’t like Hamlet.
B.
Because he didn’t like the course.
C.
Because he didn’t have the book.
D.
Because he had some questions.
【简答题】使用适当的情态动词填空: I walk ten miles ( 能走十英里路) in an hour.
【单选题】Why did the writer cry eventually when she looked at the skirts again?
A.
she suddently felt very sad.
B.
she liked the ribbons so much.
C.
she was overcome by emotion.
D.
she felt sorry for the woman.
【多选题】按生产要素分配是社会主义市场经济中的基本收入分配方式之一，下列说法不正确的是( )。
A.
按生产要素分配，是市场经济的客观要求
B.
按生产要素分配，是有效利用资源和提高资源配置效率的前提及有效途径
C.
按资本、土地、劳动等各种生产要素在生产过程中的贡献进行分配都属于按生产要素进行分配
D.
按生产要素分配，是社会主义公有制的客观要求
E.
按生产要素分配，不可能在全社会范围而只能在一个企业范围内实现
【单选题】Why did the writer take part in the experiment?
A.
To sing with his wife.
B.
To find out more about his brain.
C.
To do research for a book about Neanderthal humans.
D.
To investigate the raltionship between singing and brain activity.
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