2019届九年级数学上册第五章投影与视图5.2视图(第1课时)知能演练提升(新版)北师大版.doc

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12.视图第一课时知能演练提升ZHINENG YANLIAN TISHENG能力提升1.(2017甘肃酒泉中考)某种零件模型可以看成如图所示的几何体(空心圆柱),该几何体的俯视图是( )2.甲、乙、丙三个侦察员,从三个方位观察同一所房子(如图),在下面四个选项中,乙侦察员看到的图是( )23.(2017浙江丽水中考)如图是底面为正方形的长方体,下面有关它的三种视图的说法正确的是( )A.俯视图与主视图相同B.左视图与主视图相同C.左视图与俯视图相同D.三种视图都相同4.如图是一块带有圆形空洞和方形空洞的小木板,则下列物体既可恰好堵住圆形空洞,又可恰好堵住方形空洞的是( )5.如图,该几何体的左视图是( )36.一种机器上有一个进行转动的零件叫燕尾槽(如图),为了准确做出这个零件,请画出它的三种视图 .创新应用7.(1)如图 是一个组合体,图 是它的两种视图,请在横线上填写出两种视图的名称;图 图 (2)根据两种视图中的尺寸(单位:cm),计算这个组合体的表面积( 取 3.14).答案:能力提升41.D 2.C 3.B 4.B 5.C6.解 如图 .创新应用7.解 (1)主 俯(2)表面积 =2(85+82+52)+4 6=2(85+82+52)+43.146=207.36(cm2).

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