【判断题】【消耗次数：1】
平行于投影面的直线，在该投影面上有积聚性
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【单选题】
当直线、平面与投影面平行时，该投影面上的投影具有( )
①
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.5pt;
mso-bidi-font-size:11.0pt;
font-family:等线;
mso-ascii-font-family:等线;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:等线;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:等线;
mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
积聚性
②
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.5pt;
mso-bidi-font-size:11.0pt;
font-family:等线;
mso-ascii-font-family:等线;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:等线;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:等线;
mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
真实性
③
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.5pt;
mso-bidi-font-size:11.0pt;
font-family:等线;
mso-ascii-font-family:等线;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:等线;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:等线;
mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
类似收缩性
④
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.5pt;
mso-bidi-font-size:11.0pt;
font-family:等线;
mso-ascii-font-family:等线;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:等线;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:等线;
mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
收缩性
随机题目
【单选题】
下面轴端面上“中心孔”的标注错误的是
①
<img src=https://mi-public.oss-cn-hangzhou.aliyuncs.com/mssvc/editor/image/2018/07/03/1530604496915719.bmp title=1530604496915719.bmp alt=t7-4 轴类零件-A.bmp style=max-width: 100%; max-height: 850px; white-space: normal;/>
②
<img src=https://mi-public.oss-cn-hangzhou.aliyuncs.com/mssvc/editor/image/2018/07/03/1530604602791630.bmp title=1530604602791630.bmp alt=t7-4 轴类零件-B.bmp style=max-width: 100%; max-height: 850px; white-space: normal;/>
③
<img src=https://mi-public.oss-cn-hangzhou.aliyuncs.com/mssvc/editor/image/2018/07/03/1530604645538638.bmp title=1530604645538638.bmp alt=t7-4 轴类零件-C.bmp style=max-width: 100%; max-height: 850px; white-space: normal;/>
④
<img src=https://mi-public.oss-cn-hangzhou.aliyuncs.com/mssvc/editor/image/2018/07/03/1530604663594325.bmp title=1530604663594325.bmp alt=t7-4 轴类零件-D.bmp style=max-width: 100%; max-height: 850px; white-space: normal;/>
【单选题】
普通平键分为A、B、C三种类型，下图所示普通平键属于<img src="https://mi-public.oss-cn-hangzhou.aliyuncs.com/mssvc/editor/image/2018/07/03/1530607860640688.bmp" title="1530607860640688.bmp" alt="t7-4 键槽--4.bmp" style="max-width: 100%; max-height: 850px;"/>
①
A型平键
②
B型平键
③
C型平键