《机械制图(专科)》武汉理工大学20春作业一
机械制图(专科)-作业一1.[单选题] 在采用2：1的比例绘制一个半径是10的圆弧时，其绘图半径为（ ）。
奥鹏作业答案可以联系Q 761296021
A.R10
B.R20
C.R5
D.R30
正确答案:——B——
2.[单选题] 机器零件的真实大小应以图样上（ ）为依据。
A.绘图的准确度
B.所注尺寸数值乘以比例
C.图形的大小
D.所注尺寸数值
正确答案:——D——
3.[单选题] 已知双线螺纹，螺距为1，则它的导程为( )。
A.1
B.2
C.3
D.4
正确答案:——B——
4.[单选题] 平行于一个投影面而与另外两个投影面倾斜的直线称为( )。
A.投影面平行线
B.正平线
C.水平线
D.侧平线
正确答案:————
5.[单选题] <p class="MsoNormal"> <span style="font-family:Microsoft Yahei;">下图中，点</span><span>B</span><span style="font-family:Microsoft Yahei;">是（</span><span><span> </span></span><span style="font-family:Microsoft Yahei;">），取点方法是（</span><span><span> </span></span><span style="font-family:Microsoft Yahei;">）。</span><span> </span>
<p class="MsoNormal"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204151630_448.png" alt="" />
A. 一般点，素线法
B. 一般点，纬圆法
C. 特殊点，素线法
D. 特殊点，纬圆法
正确答案:————
6.[单选题] <p class="MsoNormal"> <span style="font-family:Microsoft Yahei;">根据水平投影和侧面投影，选择正确的正面投影。</span><span>(<span> </span>)</span>
<p class="MsoNormal"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204151247_569.png" alt="" />
A.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204150618_379.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204152540_408.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204151329_508.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204151342_285.png" alt="" />
正确答案:————
7.[单选题] <p class="MsoNormal"> <span style="font-family:Microsoft Yahei;">已知组合体的主视图和俯视图，左视图是</span><span> (<span> </span>)</span><span style="font-family:Microsoft Yahei;">。</span>
<p class="MsoNormal"> <span style="font-family:Microsoft Yahei;"><img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204143635_131.png" alt="" /><br /></span>
A.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204144518_329.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204143705_226.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204143718_307.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204142647_878.png" alt="" />
正确答案:————
8.[单选题] <p class="MsoNormal"> <span style="font-family:Microsoft Yahei;">已知主、俯视图，正确的左视图是</span><span>(<span> </span>)</span><span style="font-family:Microsoft Yahei;">。</span><span> </span>
<p class="MsoNormal"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204165041_662.png" alt="" />
A.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204164409_206.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204170331_700.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204164435_262.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204164444_428.png" alt="" />
正确答案:————
9.[单选题] 装配图中每一种零件在视图上( )。
A.只编一个序号
B.编二个序号
C.最多编三个序号
D.每个视图均需编号
正确答案:————
10.[单选题] <p class="MsoNormal"> <span style="font-family:Microsoft Yahei;">下列水平投影正确的是（</span><span><span> </span></span><span style="font-family:Microsoft Yahei;">）。</span><span> </span>
<p class="MsoNormal"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204104756_196.png" alt="" />
A.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204105536_763.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204105941_619.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204105558_990.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204104924_407.png" alt="" />
正确答案:————
11.[单选题] <p class="MsoNormal"> <span style="font-family:Microsoft Yahei;">下图为组合体的俯视图，主视图正确的全剖视图是</span><span> (<span> </span>)</span><span style="font-family:Microsoft Yahei;">。</span><span> </span>
<p class="MsoNormal"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204134630_876.png" alt="" />
A.<p class="MsoNormal" style="display:inline;"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204134649_832.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204133553_458.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204133611_491.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204133625_718.png" alt="" />
正确答案:————
12.[单选题] 两等直径的圆柱轴线垂直相交时，相贯线是( )
A.空间曲线
B.椭圆
C.圆
D.直线
正确答案:————
13.[单选题] 在下列四组视图中，正确的一组视图是（ ）
A.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204103603_59.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204103618_497.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204103417_231.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204104701_189.png" alt="" />
正确答案:————
14.[单选题] 同一图样中，同类图线的宽度应基本一致，( )、点画线及双点画线的线段长度和间隔应各自大致相等。
A.虚线
B.直线
C.双折线
D.细实线
正确答案:————
15.[单选题] <p class="MsoNormal"> <span style="font-family:Microsoft Yahei;">关于三角形</span><span>ABC</span><span style="font-family:Microsoft Yahei;">与投影面的位置关系，正确的是</span><span>(<span> </span>)</span><span style="font-family:Microsoft Yahei;">。</span><span> </span>
<p class="MsoNormal"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204104915_915.png" alt="" />
A. 一般位置平面
B. 正平面
C. 侧垂面
D. 水平面
正确答案:————
16.[单选题] <p class="MsoNormal"> <span style="font-family:Microsoft Yahei;">组合体左视图画法正确的是</span><span> (<span> </span>)</span>
<p class="MsoNormal"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204145106_903.png" alt="" />
A.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204144257_218.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204143228_903.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204143239_382.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204145204_617.png" alt="" />
正确答案:————
17.[单选题] <p class="MsoNormal"> <span style="font-family:Microsoft Yahei;">判断下列平面内直线的空间位置，指出下列说法哪种正确。</span><span>(<span> </span>)</span>
<p class="MsoNormal"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204104159_229.png" alt="" />
A. AB是正平线
B. AB是铅垂线BC是正平线
C. AB是铅垂线
D. AB是水平线
正确答案:————
18.[单选题] <p class="MsoNormal"> <span style="font-family:Microsoft Yahei;">已知主视图和俯视图，正确左视图是</span><span>(<span> </span>)</span><span style="font-family:Microsoft Yahei;">。</span><span> </span>
<p class="MsoNormal"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204163044_637.png" alt="" />
A.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204163745_39.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204163757_396.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204163123_88.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204163819_168.png" alt="" />
正确答案:————
19.[单选题] 1:5是（ ）比例。
A.放大
B.优先选用
C.缩小
D.不常用
正确答案:————
20.[单选题] 下图所示为正三棱锥的主俯视图，其中投影关系正确的是( )。
A.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204123134_186.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204121921_408.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204121933_747.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204123210_218.png" alt="" />
正确答案:————
21.[单选题] 一线段的正投影长度( )。
A.一定小于该线段的实长
B.可能大于该线段的实长
C.一定等于该线段的实长
D.可以小于或等于该线段的实长
正确答案:————
22.[单选题] 用纬圆法求圆锥表面上的点时，纬圆的直径大小与纬圆的圆心到锥顶的距离( )。
A.成正比
B.成反比 奥鹏作业答案q761 296021
C.相等
D.没有关系
正确答案:————
23.[单选题] <p class="MsoNormal" style="margin-left:8.0pt;"> <span style="font-family:Microsoft Yahei;">选择正确的左视图</span><span>(<span> </span>)</span>
<p class="MsoNormal" style="margin-left:8.0pt;"> <span><img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204152137_606.png" alt="" /><br /></span>
A.<p class="MsoNormal" style="display:inline;"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204152151_21.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204153427_370.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204151530_327.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204152228_912.png" alt="" />
正确答案:————
24.[单选题] <p class="MsoNormal"> <span style="font-family:Microsoft Yahei;">轴上加工了两个垂直相交的等直径小圆孔，其正确的</span><span>A-A</span><span style="font-family:Microsoft Yahei;">剖面图是</span><span>(<span> </span>)</span><span style="font-family:Microsoft Yahei;">。</span><span> </span>
<p class="MsoNormal"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204105706_790.png" alt="" />
A.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204105721_332.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204104509_42.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204104917_955.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204103849_571.png" alt="" />
正确答案:————
25.[单选题] <p class="MsoNormal" style="mso-pagination:widow-orphan"><span style="mso-bidi-font-size:10.5pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">下图为组合体的主、俯视图，该组合体主视图正确的全剖视图是</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> (<span style="mso-spacerun:yes"> </span>)</span><span style="mso-bidi-font-size:10.5pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"><o:p></o:p></span>
<p class="MsoNormal" style="mso-pagination:widow-orphan"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-no-proof:yes"><!--><v:shape id="图片_x0020_54" o:spid="_x0000_i1056" type="#_x0000_t75" style='width:82.2pt; height:52.8pt;visibility:visible;mso-wrap-style:square'> <v:imagedata src="JXZTDX(1).files/image150.png" o:title="" cropbottom="39081f" chromakey="white" blacklevel="-15729f" grayscale="t" bilevel="t"/></v:shape><!--><!----><img width="110" height="70" v:shapes="图片_x0020_54" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image151.png"><!----><span style="mso-font-kerning:0pt"> <!--><v:shape id="图片_x0020_59" o:spid="_x0000_i1055" type="#_x0000_t75" style='width:81.6pt;height:77.4pt; visibility:visible;mso-wrap-style:square'> <v:imagedata src="JXZTDX(1).files/image152.png" o:title=""/></v:shape><!--> <!----><img width="109" height="103" v:shapes="图片_x0020_59" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image153.png"> <!----></span></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"><o:p></o:p></span>
A.<p class="MsoNormal" style="mso-pagination:widow-orphan" style="display:inline;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-no-proof:yes"><!--><v:shape id="图片_x0020_72" o:spid="_x0000_i1054" type="#_x0000_t75" style='width:73.8pt; height:49.2pt;visibility:visible;mso-wrap-style:square'> <v:imagedata src="JXZTDX(1).files/image154.png" o:title="" chromakey="white" blacklevel="-11796f" grayscale="t" bilevel="t"/></v:shape><!--><!----><img width="98" height="66" v:shapes="图片_x0020_72" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image155.png"><!----></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"><o:p></o:p></span>
B.<p class="MsoNormal" style="mso-pagination:widow-orphan" style="display:inline;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-no-proof:yes"><!--><v:shape id="图片_x0020_130" o:spid="_x0000_i1053" type="#_x0000_t75" style='width:73.8pt; height:48.6pt;visibility:visible;mso-wrap-style:square'> <v:imagedata src="JXZTDX(1).files/image156.png" o:title="" chromakey="white" blacklevel="-15729f" grayscale="t" bilevel="t"/></v:shape><!--><!----><img width="98" height="65" v:shapes="图片_x0020_130" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image157.png"><!----></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"><o:p></o:p></span>
C.<p class="MsoNormal" style="mso-pagination:widow-orphan" style="display:inline;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-no-proof:yes"><!--><v:shape id="图片_x0020_131" o:spid="_x0000_i1052" type="#_x0000_t75" style='width:73.8pt; height:49.2pt;visibility:visible;mso-wrap-style:square'> <v:imagedata src="JXZTDX(1).files/image158.png" o:title="" chromakey="white" blacklevel="-11796f" grayscale="t" bilevel="t"/></v:shape><!--><!----><img width="98" height="66" v:shapes="图片_x0020_131" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image159.png"><!----></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"><o:p></o:p></span>
D.<p class="MsoNormal" style="mso-pagination:widow-orphan" style="display:inline;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-no-proof:yes"><!--><v:shape id="图片_x0020_132" o:spid="_x0000_i1051" type="#_x0000_t75" style='width:73.8pt; height:48.6pt;visibility:visible;mso-wrap-style:square'> <v:imagedata src="JXZTDX(1).files/image160.png" o:title="" chromakey="white" blacklevel="-13763f" grayscale="t" bilevel="t"/></v:shape><!--><!----><img width="98" height="65" v:shapes="图片_x0020_132" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image161.png"><!----></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"><o:p></o:p></span>
正确答案:————
26.[单选题] 组合体画法正确的是 ( )
A.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204162655_575.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204161633_907.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204161654_811.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204162354_777.png" alt="" />
正确答案:————
27.[单选题] 在圆柱面上所作的直线一定与圆柱轴线（ ）。
A.平行
B.相交
C.异面
D.垂直
正确答案:————
28.[单选题] 当圆柱体的轴线垂直于水平面时，圆柱面的水平投影具有 ，其形状是 。（ ）
A.积聚性，矩形
B.积聚性，圆
C.实形性，矩形
D.实形性，圆
正确答案:————
29.[单选题] 形体的投影规律“长对正、高平齐、宽相等” ( )。
A.对整体不适用、局部适用
B.对整体、局部都适用
C.对整体、局部都不适用
D.对整体适用、局部不适用
正确答案:————
30.[单选题] 判别以下绘制的平面图形三面投影图中，正确的图形是( )。
A.<p class="MsoNormal" style="mso-pagination:widow-orphan" style="display:inline;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-no-proof:yes"><!--><v:shape id="_x0000_i1146" type="#_x0000_t75" alt="04107-7" style='width:95.4pt; height:88.8pt;visibility:visible;mso-wrap-style:square'> <v:imagedata src="JXZTDX(1).files/image003.png" o:title="04107-7" cropright="49100f"/></v:shape><!--><!----><img width="127" height="118" alt="04107-7" v:shapes="_x0000_i1146" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image004.jpg"><!----></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"><o:p></o:p></span>
B.<p class="MsoNormal" style="mso-pagination:widow-orphan" style="display:inline;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-no-proof:yes"><!--><v:shape id="_x0000_i1145" type="#_x0000_t75" alt="04107-7" style='width:95.4pt; height:88.8pt;visibility:visible;mso-wrap-style:square'> <v:imagedata src="JXZTDX(1).files/image003.png" o:title="04107-7" cropleft="16436f" cropright="32664f"/></v:shape><!--><!----><img width="127" height="118" alt="04107-7" v:shapes="_x0000_i1145" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image005.jpg"><!----></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"><o:p></o:p></span>
C.<p class="MsoNormal" style="mso-pagination:widow-orphan" style="display:inline;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-no-proof:yes"><!--><v:shape id="_x0000_i1144" type="#_x0000_t75" alt="04107-7" style='width:95.4pt; height:88.8pt;visibility:visible;mso-wrap-style:square'> <v:imagedata src="JXZTDX(1).files/image003.png" o:title="04107-7" cropleft="32872f" cropright="16229f"/></v:shape><!--><!----><img width="127" height="118" alt="04107-7" v:shapes="_x0000_i1144" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image006.jpg"><!----></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"><o:p></o:p></span>
D.<p class="MsoNormal" style="mso-pagination:widow-orphan" style="display:inline;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-no-proof:yes"><!--><v:shape id="_x0000_i1143" type="#_x0000_t75" alt="04107-7" style='width:94.2pt; height:88.8pt;visibility:visible;mso-wrap-style:square'> <v:imagedata src="JXZTDX(1).files/image003.png" o:title="04107-7" cropleft="49307f"/></v:shape><!--><!----><img width="126" height="118" alt="04107-7" v:shapes="_x0000_i1143" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image007.jpg"><!----></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"><o:p></o:p></span>
正确答案:————
31.[单选题] <p class="MsoNormal"> <span style="font-family:Microsoft Yahei;">组合体俯视图画法正确的是</span><span> (<span> </span>)</span>
<p class="MsoNormal"> <span><img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204170434_207.png" alt="" /><br /></span>
A.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204170446_691.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204165415_686.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204165427_834.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204165436_719.png" alt="" />
正确答案:————
32.[单选题] 下图中表面粗糙度代号标注正确的是( )。
A.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204164632_621.png" alt="" />
B.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204164644_617.png" alt="" />
C.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204163431_398.png" alt="" />
D.<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204163440_533.png" alt="" />
正确答案:————
33.[单选题] ( )是用来量取线段和分割线段的工具。
A.圆规
B.分规
C.比例尺
D.三角板
正确答案:————
34.[单选题] 垂直于H面的平面称为( )。
A.正垂面
B.铅垂面
C.水平面
D.一般面
正确答案:————
35.[单选题] 断面图的种类分为几种 ( )
A.1种
B.2种
C.3种
D.4种
正确答案:————
36.[单选题] 我国国标规定，应优先选用（ ）种基本幅面图纸。
A.3
B.4
C.5
D.6
正确答案:————
37.[单选题] 我国国标规定，表示轴线、对称中心线采用（ ）线型。
A.粗实线
B.细实线
C.虚线
D.细点画线
正确答案:————
38.[单选题] 下列说法哪种正确 ( )
A.断面图的概念为假想用剖切平面将机件的某处切断，仅画出剖切平面与机件接触的部分图形，称为断面图
B.断面图的概念为假想用剖切平面将机件的某处切断，不仅要画出剖切平面与机件接触的部分图形，还要画出所有可见部分的图形，称为断面图
C.断面图的概念为真正用平面将机件的某处切断，不仅要画出剖切平面与机件接触的部分图形，还要画出所有可见部分的图形，称为断面图
D.断面图的概念为真正用平面将机件的某处切断，仅画出剖切平面与机件接触的部分图形，称为断面图
正确答案:————
39.[单选题] 表示基轴制配合的是（ ）
A.<p class="MsoNormal" style="mso-pagination:widow-orphan" style="display:inline;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt;mso-no-proof:yes"><!--><v:shape id="图片_x0020_97" o:spid="_x0000_i1045" type="#_x0000_t75" style='width:15.6pt; height:28.2pt;visibility:visible;mso-wrap-style:square'> <v:imagedata src="JXZTDX(1).files/image168.png" o:title=""/></v:shape><!--><!----><img width="21" height="38" v:shapes="图片_x0020_97" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image169.png"><!----></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"><o:p></o:p></span>
B.<p class="MsoNormal" style="mso-pagination:widow-orphan" style="display:inline;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt"><!--><v:shape id="_x0000_i1025" type="#_x0000_t75" style='width:22.8pt;height:31.2pt' o:ole=""> <v:imagedata src="JXZTDX(1).files/image170.wmz" o:title=""/></v:shape><!--><!----><img width="30" height="42" v:shapes="_x0000_i1025" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image171.png"><!----><!--><xml> <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1025" DrawAspect="Content" ObjectID="_1633350177"> </o:OLEObject></xml><!--><span style="mso-font-kerning:0pt"> <o:p></o:p></span></span>
C.<p class="MsoNormal" style="mso-pagination:widow-orphan" style="display:inline;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt"><!--><v:shape id="_x0000_i1026" type="#_x0000_t75" style='width:19.2pt;height:28.8pt' o:ole=""> <v:imagedata src="JXZTDX(1).files/image172.wmz" o:title=""/></v:shape><!--><!----><img width="26" height="38" v:shapes="_x0000_i1026" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image173.png"><!----><!--><xml> <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1026" DrawAspect="Content" ObjectID="_1633350178"> </o:OLEObject></xml><!--><span style="mso-font-kerning:0pt"> <o:p></o:p></span></span>
D.<p class="MsoNormal" style="mso-pagination:widow-orphan" style="display:inline;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt"><!--><v:shape id="_x0000_i1027" type="#_x0000_t75" style='width:21pt;height:28.8pt' o:ole=""> <v:imagedata src="JXZTDX(1).files/image174.wmz" o:title=""/></v:shape><!--><!----><img width="28" height="38" v:shapes="_x0000_i1027" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXZTDX(1).files/image175.png"><!----><!--><xml> <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1027" DrawAspect="Content" ObjectID="_1633350179"> </o:OLEObject></xml><!--><span style="mso-font-kerning:0pt"> <o:p></o:p></span></span>
正确答案:————
40.[单选题] 两圆柱轴线平行相贯，其柱面的相贯线是( )。
A.空间曲线
B.椭圆
C.直线段
D.圆
正确答案:————
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