【多选题】
圆锥表面求点投影的方法有 和 两种。1.辅助直线法 2.辅助圆法 3.辅助平面法 4.辅助素线法
【简答题】
作出平面ABCD的V面投影<img src="https://file.icve.com.cn/ssykt5/115/113/1CE1C586E3DA4B53B3D299F2985BE8EF.png"/>
【单选题】
平面的正面投影积聚为一条直线并与OX轴平行,该平面是( )。
①
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7.8 磅
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false
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ZH-CN
X-NONE
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正平面
②
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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水平面
③
Normal
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7.8 磅
0
2
false
false
false
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ZH-CN
X-NONE
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正垂面
④
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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{mso-style-name:普通表格;
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铅垂面
【单选题】
已知A、B、C三点坐标分别为(10、20、30)(20、40、60)、(30、60、90),则A、B、C三点______。
①
Normal
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7.8 磅
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false
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X-NONE
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mso-fareast-font-family:等线;
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mso-hansi-font-family:等线;
mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
表示一个平面
②
Normal
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7.8 磅
0
2
false
false
false
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ZH-CN
X-NONE
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不能表示一个平面
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false
false
false
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X-NONE
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表示一个特殊位置平面
④
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false
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mso-hansi-theme-font:minor-latin;
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无法判断
【单选题】
mso-ascii-theme-font:minor-latin;mso-fareast-theme-font:minor-fareast;
mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Times New Roman
mso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:
ZH-CN;mso-bidi-language:AR-SA">已知一立体的主视图和俯视图,关于它的左视图,有以下几种说法,哪一种判断是正确的<img src="https://upload.icve.com.cn:89/ssykt/y@685F7E74F3F05F4D0ECB9904D6EEACE2.png/download?time=636534341114882959&token=07F7C682B0AB015949D0A5DFE542A243&filename=%E8%87%AA%E5%8A%A8%E4%B8%8A%E4%BC%A0p5elah6ofilfkbdrcydsgg20180205132831.png"/>
【多选题】
组合体的读图首先要三个图形 想形状,分清各部分的形状,然后综合起来想 。1. 对投影 2.合起来 3.整体 4.分析结构
【多选题】
mso-bidi-font-family:Times New Romanmso-bidi-theme-font:minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">化工设备图可以用来指导设备的<img class="questionIndex" data-index="1" src="https://zjy2.icve.com.cn/common/images/question_button/BlankSpace1.gif"/>
【单选题】
投影法的分类有 和平行投影法两种,其中平行投影法又可分为 和 两种。请选择以下选项的正确顺序:1、平行投影法 2、中心投影法 3、正投影 4、斜投影