尔雅工程制图（双语）答案(学习通2023课后作业答案)

点击查看答案

1.3章节测验

1、尔雅【多选题】In using AutoCAD software,工程 the following descriptions are about the usages of the command Trim, which of them are correct?
A、We can pick the boundaries one by one.
B、制图We can trim only one segment in one time conducting the Trim command.
C、双语We can right click the mouse to select all the objects as boundaries.
D、答案We can trim several segments in one time conducting the Trim command.

2、学习【多选题】In using AutoCAD software,通课 which of the following should be set when we draw a qualified engineering drawing with AutoCAD software?
A、Layer properties
B、后作Text styles
C、业答Dimension styles
D、尔雅Hatch styles

3、工程【多选题】In using AutoCAD software,制图 which of the following commands can be used to get parallel lines of an existing line?
A、Move
B、双语Mirror
C、答案Copy
D、学习Offset

4、【判断题】In using AutoCAD software, when we set a new dimension style for mechanical drawing, we set Extension lines Offset from origin to 2mm.

5、【判断题】In CATIA software, the command Pad can be used to extrude a sketch only along one direction.

2.7章节测验

1、【单选题】Which of the following lines are used to express axis lines, symmetrical center lines, and crossed center lines of circles?
A、Thin phantom lines
B、Thin solid lines
C、Thin center lines
D、Wavy lines

2、【单选题】Which of the following is the default unit in mechanical drawings?
A、mm
B、cm
C、m
D、km

3、【多选题】In drawings, thick solid lines can be used to represent .
A、Visible edges
B、Visible contour lines
C、Dimension lines
D、Extension lines

4、【判断题】The symbol "GB/T 14689-2008" denotes that the concern national standard is compulsory.

5、【判断题】The dimensions in a detail drawing indicate the finished size of the part.

3.5章节测验

1、【单选题】Which projection gives the true length of line AB?
A、Frontal projection
B、Horizontal projection
C、Profile projection
D、None of them

2、【单选题】The relationship between line AB and line CD is .
A、Parallel
B、Intersecting
C、Skew

3、【单选题】According to the projections, plane ABCD is a .
A、V-perpendicular plane
B、H-perpendicular plane
C、Profile plane
D、W-perpendicular plane

4、【多选题】Which of the following are the projection rules of the projections of points?
A、The frontal projection and the horizontal projection of the same point should be aligned vertically.
B、The frontal projection and the profile projection of the same point should be aligned horizontally.
C、The horizontal projection and the profile projection of the same point have the same width coordinate.

5、【多选题】Which of the following planes have the projection of edge view?
A、V-perpendicular plane
B、Frontal plane
C、W-perpendicular plane
D、Horizontal plane

4.7章节测验

1、【单选题】This is an incomplete cone. The intersection of the cutting plane and the conical surface is .
A、Hyperbola
B、Ellipse
C、Two lines
D、Parabola
E、Triangle

2、【多选题】Where is point located in the cylindrical surface?
A、The left half
B、The right half
C、The front half
D、The rear half

3、【多选题】The incorrect dimensions in the figure are .
A、10
B、φ20
C、6
D、18

4、【判断题】When making projections of points in the conical surfaces of cones and spherical surfaces on spheres, auxiliary element method and auxiliary latitude circle method can both be used.

5、【判断题】From this figure, we can see that the horizontal projection and the profile projection of the intersection of the external cylindrical surface and the internal cylindrical surface are both in the circles in the top view and the left-side view.

5.6章节测验

1、【单选题】If a line is parallel to a rectangular coordinate axis in an object, its axonometric projection will to the corresponding axonometric axis, and it will has the axial deformation coefficient with corresponding axonometric axis.
A、Parallel, different
B、Parallel, same
C、Intersect, different
D、Intersect, same

2、【多选题】Which of the usages of center lines in views are correct?
A、Express axis of solids of revolution.
B、Show the projection of symmetric plane of a solid in a certain direction
C、Express crossed center lines of circular projections
D、Express invisible outlines

3、【多选题】There are two adjacent frames, what of the geometrical elements they may stand for?
A、Two parallel planes
B、A plane and a circular surface
C、Two circular surfaces
D、Two intersecting planes

4、【判断题】When the views of a composite solid formed by adding are drawn, the solid can be considered as formed by small features, and then the views of the features are drawn one by one. In the process of drawing views of the features, we should keep in mind that the composite solid is a whole solid.

5、【判断题】When dimensioning a composite solid which is formed by cutting, the dimensions should be given at the location where the solid is cut.

6.8章节测验

1、【多选题】According to the cutting range, sectional views include .
A、Full sectional view
B、Half sectional view
C、Offset section
D、Broken-out section

2、【判断题】If the internal structure of a part is complex, the internal surfaces of it will result in too many hidden lines. In this case, a sectional view should be used to reveal the internal features of the part.

3、【判断题】Sometimes,a part as a whole is nearly symmetrical,but there may be small features which are not symmetrical. In this case, if the non-symmetrical small structure is clearly represented in one view, half sectional views can also be used in other views.

4、【判断题】Sometimes, there are small revolved features in shafts that need to be represented with removed sections. In these cases, when cutting planes go through the axes of the small holes or pits, the relative removed sections should be drawn as sectional views.

5、【判断题】The representations of the enlargement views can be the same to or different from that of the original views.

7.8章节测验

1、【多选题】Which of the follow numbers are of Ra values?
A、3.2
B、6.3
C、6.4
D、12.5

2、【多选题】Dimensions in detail drawings should be .
A、correct
B、complete
C、clear
D、reasonable

3、【判断题】When a shaft is represented, the axis of it should be placed horizontally.

4、【判断题】C2 is a dimension of a chamfer of a part, in which capital letter C is used to stand for 30°.

5、【判断题】The size of the grooves in parts can be given as width and diameter or width and depth. 7X2.25 is the dimension of a groove, in this dimension, 7 is the depth of the groove and 2.25 is the width of it.

8.8章节测验

1、【单选题】Which screw thread term is the nominal diameter?
A、Major diameter
B、Minor diameter
C、Pitch diameter
D、Crest

2、【单选题】If the major diameter of a thread is d, the minor diameter d1 approximately equals .
A、d
B、0.85d
C、0.75d
D、1.1d

3、【多选题】When views of spur gears are drawn, there are several parameters which should be given, include , and the others.
A、root diameter
B、pitch diameter
C、outside diameter
D、pitch

4、【判断题】The visible thread termination lines should be drawn in thick solid lines.

5、【判断题】When the spur gears are drawn in sectional views, the section lines should be drawn in gear tooth portions.

9.6章节测验

1、【单选题】The giving figure is a part of the main view of an assembly drawing, please choose the correct corresponding left-side view.
A、
B、
C、
D、.

2、【多选题】What of the following are the contents of assembly drawings?
A、Title block, part numbers and parts list
B、Casting corners
C、A group of views
D、Technical requirements

3、【多选题】What of the following are indicated in assembly drawings?
A、Surface roughness of parts
B、Assembling relationships of parts
C、Geometrical tolerances of parts
D、Working principle of assembly

4、【判断题】The methods which can be used in representing machine parts, include regular views, sectional views, removed sections, and the like, which can also be used to represent assemblies.

5、【判断题】When assembly drawings are made, the small features including small chamfers and small corners can be omitted.

学习通工程制图

工程制图是一门必须掌握的技能，它在各行各业都有广泛的应用。学习通工程制图是一门让学生掌握如何绘制机械制图的课程，本文将介绍这门课程的相关内容。

课程简介

学习通工程制图课程主要包含以下内容：

• 机械制图基础知识
• 绘制零件图
• 绘制装配图
• 绘制剖视图
• 绘制工艺流程图
• 三维制图

通过这些内容的学习，学生可以掌握机械制图的基础知识，能够独立完成机械零件图、装配图、剖视图和工艺流程图的绘制，以及三维制图的基本操作。

课程特点

学习通工程制图具有以下特点：

• 操作性强：学生可以在课程中进行多种机械制图的练习，掌握实际操作技能。
• 实用性强：学生所学的机械制图知识和技能可以在实际工作中应用。
• 综合性强：学生学会了机械制图的基本知识和技能，还学会了三维制图的基本操作，为以后的学习和工作打下了基础。
• 国际化：学习通工程制图涵盖了国内外机械制图的基础知识和技能，使学生可以更好地适应国际化的工作环境。

课程目标

学习通工程制图的目标是：

• 掌握机械制图的基本知识和技能。
• 掌握机械零件图、装配图、剖视图和工艺流程图的绘制方法。
• 掌握三维制图的基本操作。
• 能够独立完成机械制图的绘制。

课程评估

学习通工程制图的评估方式主要包括以下几个方面：

• 平时作业：课程中会布置一定量的作业，学生需要按时完成并提交。
• 实验报告：在课程中，学生需要完成多项机械制图的实验，并撰写实验报告。
• 期末考试：期末考试主要测试学生对机械制图基础知识和技能的掌握程度。

总结

学习通工程制图是一门非常实用的课程，它可以帮助学生掌握机械制图的基本知识和技能，为以后的学习和工作打下坚实的基础。通过课程的学习和实践，学生可以在机械制图方面得到很好的提高。