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【单选题】
投影变换主要分为平行投影和透视投影两大类,这两种投影变换的主要区别为( )A.
投影平面是与一个坐标轴相交还是与多个坐标轴相交
B.
投影射线是否与投影平面垂直
C.
与坐标轴平行的图形线段是否以相同比例缩小
D.
投影射线是否相互平行
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举一反三
【单选题】The best title of this passage is____.
A.
Jewish and Non-Jewish in American
B.
Jewish Identity in America
C.
Judaism-a Religion?
D.
College Jewish Students
【单选题】下列关于可行解、基解、基可行解的说法错误的是 _
A.
可行解中包含基可行解
B.
可行解与基解之间无交集
C.
线性规划问题有可行解必有基可行解
D.
满足非负约束条件的基解为基可行解
【单选题】When I was growing up, the whole world was Jewish. The heroes were Jewish and the villains were Jewish. The landlord, the doctor, the grocer, your best friend, the village idiot, the neighborhood bull...
A.
quite satisfied with her life
B.
a poor Jewish girl
C.
born in a middle-class family
D.
a resident in a rich area in New York
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