沪科版（2024）九年级下册 第25章投影与视图单元评估卷 （含答案）

第25章投影与视图单元评估卷 一、选择题(本大题共10小题，每小题4分，共 40分) 1．下列各种现象属于中心投影的是(　　) A．阳光下沙滩上人的影子 B．晚上人走在路灯下的影子 C．中午用来乘凉的树影 D．阳光下旗杆的影子 2．正六棱柱按如图所示放置，一束水平方向的平行光线照射此正六棱柱时的正投影是(　　) INCLUDEPICTURE"26HJ-1A.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-1A.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-1A.tif" \* MERGEFORMATINET A INCLUDEPICTURE"26HJ-1B.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-1B.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-1B.tif" \* MERGEFORMATINET B INCLUDEPICTURE"26HJ-1C.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-1C.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-1C.tif" \* MERGEFORMATINET C INCLUDEPICTURE"26HJ-1D.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-1D.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-1D.tif" \* MERGEFORMATINET D INCLUDEPICTURE"26HJ-1.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-1.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-1.tif" \* MERGEFORMATINET (第2题) 　　　INCLUDEPICTURE"26HJ-2.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-2.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-2.tif" \* MERGEFORMATINET (第3题) 　　　INCLUDEPICTURE"25HKJ-10.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\25HKJ-10.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\25HKJ-10.tif" \* MERGEFORMATINET (第4题) 3．如图是物理学中经常使用的U型磁铁示意图，其俯视图是(　　) INCLUDEPICTURE"26HJ-2A.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-2A.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-2A.tif" \* MERGEFORMATINET A　　　INCLUDEPICTURE"26HJ-2B.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-2B.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-2B.tif" \* MERGEFORMATINET B　　　INCLUDEPICTURE"26HJ-2C.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-2C.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-2C.tif" \* MERGEFORMATINET C　　　INCLUDEPICTURE"26HJ-2D.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-2D.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\26HJ-2D.tif" \* MERGEFORMATINET D 4．六个大小相同的小正方体搭成的几何体俯视图如图所示(每个小正方形上的数字表示摞起来的小正方体的个数)，其主视图是(　　) INCLUDEPICTURE"25HKJ-10A.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\25HKJ-10A.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\25HKJ-10A.tif" \* MERGEFORMATINET A INCLUDEPICTURE"25HKJ-10b.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\25HKJ-10b.tif" \* MERGEFORMATINET INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\25HKJ-10b.tif" \* MERGEFORMATINET B INCLUDEPICTURE"25HKJ-10c.tif" INCLUDEPICTURE "D:\\26春\\9数学下册HK版安徽\\25HKJ-10c.tif" \ ... ...