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【单选题】
设 是实数,若复数 (i为虚数单位)在复平面内对应的点在直线x+y=0上,则 的值为(    )
A.
-1
B.
0
C.
1
D.
2
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A.
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B.
错误
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A.
全剖视图
B.
半剖视图
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局部剖视图
D.
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A.
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B.
错误
【判断题】再好的核心概念,也只能作为广告(作品)的主题。
A.
正确
B.
错误
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