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1. 已知复数word/media/image3_1.png,若word/media/image4_1.png是纯虚数,则实数word/media/image5_1.png等于
A.word/media/image6_1.png B.word/media/image7_1.png C.word/media/image8_1.png D.word/media/image9_1.png
2. 已知命题word/media/image10_1.png,则
A. word/media/image11_1.png B.word/media/image12_1.png
C. word/media/image13_1.png D.word/media/image14_1.png
3. 已知word/media/image15_1.png,word/media/image16_1.png为两条不同的直线,word/media/image17_1.png,word/media/image18_1.png为两个不同的平面,则下列命题中正确的是
A .word/media/image20_1.png B. word/media/image22_1.png
C.word/media/image24_1.png D. word/media/image27_1.png
4. 如图,三棱柱word/media/image29_1.png的侧棱长
和底面边长均为word/media/image30_1.png,且侧棱word/media/image31_1.png底面word/media/image32_1.png,
其正(主)视图是边长为word/media/image33_1.png的正方形,则此三
棱柱侧(左)视图的面积为
A.word/media/image34_1.png B.word/media/image35_1.png
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