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【单选题】
上图所示的对偶单纯形表, 表(3)中x3的系数列向量为( )
A.
5/2,-2
B.
-5/2,-1
C.
2,-2
D.
-1,-1/2
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举一反三
【单选题】为了增加丘陵和山地地区描述高差起伏的视觉效果而发展的技术为
A.
三维方块图
B.
视线图
C.
地貌晕渲图
D.
剖面图
【单选题】They paid fifty percent of _____ they were able to earn to the state.
A.
that
B.
which
C.
what
D.
whom
【单选题】糖尿病病人不易过多摄入下列中的( )食物
A.
脂肪
B.
纤维素
C.
蛋白质
D.
【单选题】The ________ of school leavers that go to university is about fifty percent.
A.
degree
B.
percentage
C.
level
D.
standard
【简答题】A.More than fifty percent. B.About forty percent. C.At least ten percent. D.Twenty or thirty percent.
【判断题】为了增加丘陵和山地地区描述高差起伏的视觉效果,制图工作者成功地运用了一种“阴影立体法”即地貌晕渲法。()
A.
正确
B.
错误
【单选题】In the United States, cable television had come to nearly fifty percent of the homes by ______.
A.
1948
B.
1940s
C.
1970s
D.
1990s
【单选题】李斯特的经济学体系特别强调
A.
个人
B.
企业
C.
国家
D.
世界
【单选题】A.Nearly fifty percent are foreigners.B.About fifleen percent are from Africa.#
A.
Nearly fifty percent are foreigners.
B.
About fifleen percent are from Africa.
C.
A large majority are from Latin America.
D.
A small number are from the Far East.
【简答题】A.Nearly fifty percent are foreigners. B.About fif percent are from Africa. C.A large majority are from Latin America. D.A small number are from the Far East.
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