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工程制图（双语）
- If the major diameter of a thread is d,the minor diameter d1 approximately equals .
- The projection line which connects frontal projection and profile projection is perpendicular to axis .
- Which of the following lines are used to express break lines, or boundary lines for broken locations where the view portions and the sectioned portions are separated?
- The profile projection of a point can give the of the point.
When a sphere is cut by a plane, the intersection of the spherical surface of the sphere and the plane could be a(an) .
- When two external cylindrical surfaces intersect to each other, which of the following description is correct about the intersection?
Is point K in line AB?
In CATIA software, the command
is used to ?Which of the following representation of part of an assembly drawing is correct?
- Which of the following description can not be acquired from assembly drawing?
- In an assembly drawing, there are 6 nuts which are used in bolt joints, and there is another nut which has the same size and of the same type with the others, and then how many part nubmer should be given to these nuts?
- Inclined view should be spacified with arrow and letter, the method to give the letters is that .
The ture shape of plane P is a .
According to the projections, line AB is a .
- In using AutoCAD software, when set a layer, which of the following items should be specified?
In CATIA software, which of the following command can be used to draw a rectangle?
- The diameters of screw threads include .
In CATIA software, the command
can be used to ?- In AutoCAD software, what of the following groups of commands are placed at the same place?
- What are the projection properties of horizontal line?
- According to the shapes of the thread forms, screw threads include , and others.
- In CATIA software, there are several tool bars which are used in constructing models of solids in Part Design workbench, including , and the others.
According to the figure, which of the following is correct?
This is a triangular pyramid, what kind of lines are included in the solid?
Which of the following features are machined technical features?
- When views of spur gears are drawn, there are several parameters which should be given, include , and the others.
- Revolved sections are the sections which are individually drawn outside of the original view, with the boundary lines drawn in thick solid lines.
- Axonometric projection can give the exact shape and size of the object, and it is easy to draw and can be measured easily, so it is widely used in engineering.
- In mechanical drawings, the dimensions of the parts should be given according to the drawing scales.
- Dimensions in a detail drawing indicate the final size of the finished part.
- When a part is represented, according to the different structure characteristic of it, the orientation of the part can be machined orientation or working orientation. For a shaft, the represention orientation of it is working orientation.
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.
- The line widths of the lines of the same type in a drawing should be consistent. The dash lengths and the spaces between dashes should be approximately consistent.
- When a machine part is drawn only half of it, the dimensions should be given according to the half size of it.
- 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.
In CATIA software, the command Pad
can be used to extrude a sketch only along one direction.- When the spur gears are drawn in sectional views, the section lines should be drawn in gear tooth portions.
- A ridge of uniform cross section in the form of helix on the surface of a cylinder is named screw thread.
Crest diameter of screw thread should be drawn in thick solid line .
Generally, there are several datums in a certain direction of a part, one of them is the main datum and the others are the auxiliary datums. The connecting dimensions should be given between main datum and auxiliary datums.
- When sectional views are used to represent solids or features, try to avoid incomplete elements or sections that do not reflect real shapes.
- In order to avoid misunderstanding, the wavy lines, which are used in partial views or broken-out sections as division lines, should be separately drawn, they can not be coincide with or be of the extensions of other existing lines.
- Generally, normal planes are preferred to be used as cutting planes, and the cutting plane will go through the symmetrical planes of the solids or the axes of revolved features.
- In the sectional drawing of a thread joint, the representation method of the place that the internal and external threads are screwed together is the same as that of the internal threads.
- 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.
- C2 is a dimension of a chamfer of a part, in which capital letter C is used to stand for 30°.
- Transition lines in a casting part are not real projections of outlines of the part， they are drawn in thin solid lines.
- In sectional views, the invisible outlines behind the cutting planes should be drawn in dashed lines.
The dimensions of the non-machined surfaces, such as casting surfaces and forging surfaces, should be given as dimension chains of themselves apart from the machined surfaces. And the dimensions of the two kinds of surfaces should be linked by a connecting dimension.
- Pitch of screw thread is the axial distance between the two adjacent teeth at the corresponding points on the crest line.
A:0.85d B:0.75d C:1.1d D:d
答案:对
A:OZ B:OX C:OY
AI参考:答案：B:OX。根据题意，投影线连接正投影和平面投影，垂直于轴线，而正投影和平面投影通常都垂直于OX轴，因此答案为B。'
A:Thin phantom lines B:Thick solid lines C:Thin center lines D:Wavy lines
AI参考:正确答案是【B】: Thick solid lines，厚实粗线通常用来表达视图中各部分以及分段位置被分离时的断裂线或边界线。选项A：纤细虚线；选项C：中间细线；选项D：波浪线都不是表达断裂线的常见方式。因此，答案为B。'
A:Coordinate Y and coordinate Z B:Coordinate X and coordinate Y C:Coordinate X and coordinate Z
答案:Coordinate Xand coordinate Y
A:Line B:Ellipse C:Parabola D:Circle E:Hyperbola
答案:错
A:The intersection line in noncircular view is a curve, and it bends toward the axis of the smaller cylinder. B:The intersection line in noncircular view is an arc, and it bends toward the axis of the larger cylinder. C:The intersection line in noncircular view is a curve, and it bends toward the axis of the larger cylinder. D:The intersection line in noncircular view is an arc, and it bends toward the axis of the smaller cylinder.
答案:nds toward the axis of the smaller cylinder.
答案:2014is the year when people’s income is the lowest.AI参考:正确选项是：No，point K is not in line AB.解释：根据题目描述，我们需要判断点K是否在直线AB上。由于题目中没有给出直线AB的具体信息，我们无法直接判断。但是，从图片中可以看出，点K与点A、B并不在同一条直线上，因此可以得出结论：点K不在直线AB上。所以，正确答案是No，point K is not in line AB。'
A:go into Drafting workbench B:go into Sketcher workbench C:draw circles D:draw arcs
AI参考:正确选项是【B:go into Sketcher workbench】。在CATIA软件中，
命令用于进入Sketcher工作台，Sketcher工作台是用于草图的绘制和修改的工具。而选项A、C、D都是与草图绘制无关的操作。因此，B选项“进入Sketcher工作台”是正确的答案。'A: B: C: D:
A:The assembling relationship of parts or components of a certain assembly. B:All of the structure information of all parts of a certain assembly. C:The types and the amounts of parts and components in a certain assembly. D:The principle of a certain assembly.
A:7 B:1 C:6 D:2
AI参考:正确答案是【C:6】。在装配图中，有6个螺栓连接用的螺母，还有一个与其他螺母相同大小和类型的螺母，所以应该给这些螺母编号6个。因此，选项C是正确答案。'
A:The letter should be given horizontally and upward B:The letter should be written horizontally and leftward C:The letter should be written vertically and leftward D:The letter should be written vertically and upward
AI参考:正确选项是【D:The letter should be written vertically and upward】。原文中提到“倾斜视图应该用箭头和字母表示，给字母的方法是”，根据上下文可以推断出这里指的是给字母的书写方向应该是垂直向上，即选项D。其他选项A、B、C都不符合原文中的描述。'
A:Rectangle B:Parallelogram C:Quadrangle D:Triangle
A:Oblique line B:Horizontal line C:Profile line D:Frontal line
AI参考:正确选项是【B:Horizontal line】。根据题目描述，图片中的线段AB是一条线段，根据选项中的描述，只有Horizontal line（水平线）符合题意，因为它是一条与水平面平行的直线。Oblique line（斜线）、Profile line（剖面线）和Frontal line（正面线）都不符合题意。'
A:Color B:Linetype C:Lineweight D:The name of the layer
A: B: C: D:
AI参考:正确选项是【C:】。在CATIA软件中，可以使用C选项中的命令来绘制一个矩形。具体来说，可以使用“RECTANGLE”工具，该工具可以在绘图区域中绘制一个矩形。其他选项中的命令与绘制矩形无关，因此不符合要求。'
A:available diameter B:major diameter C:pitch diameter D:minor diameter
A:give tangency constraint between a line and an circle B:give the diameter of a circle C:give perpendicular constraint between two lines D:give the distance between two lines
AI参考:正确答案是【ABD】。在CATIA软件中，
命令可以用于给一条线与一个圆相切的约束、给圆的直径、给两条线的垂直约束和给两条线的距离约束。所以正确选项为ABD。C选项不属于此命令的功能范畴。'A:Fillet and Chamfer B:Circle and Arc C:Trim and Extend D:Mirror and Copy
A:The horizontal projection gives the true length. B:The fronal projection is parallel to axis OX. C:The profile projection is parallel to axis OZ.
A:metric thread B:rectangular thread C:pipe thread D:acme thread
AI参考:正确答案是：C:pipe thread。题目中提到了根据螺纹的形状，因此可以推断出答案与螺纹形状有关。选项A、B和D都与螺纹形状有关，但只有选项C（管道螺纹）符合题目要求。因此，答案是C。'
A:Transformation Features B:Dress-Up Features C:Sketch-Based Features D:Constraints
AI参考:正确选项是【C:Sketch-Based Features】。在CATIA软件中，用于构建实体模型的部分设计工作台中有几个工具栏，其中包括基于草图的特征（Sketch-Based Features），这些工具栏用于创建和修改三维模型。其他选项中，Transformation Features（变换特征）和Dress-Up Features（装饰特征）主要用于对模型进行修改和美化，而Constraints（约束）则用于限制模型中的几何元素之间的相对位置和运动。因此，选项C是唯一与构建三维模型相关的选项。'
A:Point M is in plane ABC. B:Point N is in plane ABC. C:Line MN is in plane ABC. D:Point N is in line EF.
AI参考:正确选项是【C:Line MN is in plane ABC.】根据题目的图片，可以得知点M和点N都在平面ABC内，而线段MN是由点M和点N所确定的直线，因此线段MN也在平面ABC内。所以选项C是正确的。选项A、B、D都没有在图片中得到支持，因此是错误的。'
A:W-perpendicular line B:Horizontal line C:H-perpendicular line D:Profile line E:Oblique line
AI参考:正确选项为【C:H-perpendicular line】。根据题目描述，这是一个三角锥体，需要判断哪些线条属于实体部分。根据几何学知识，三角锥体是由三条边和三个面构成的，其中一条边是底边，另外两条边是垂直于底边的两条高线，因此选项C中的“H-perpendicular line”是正确的答案。其他选项如W-perpendicular line（侧垂线）、Horizontal line（水平线）、Profile line（轮廓线）和斜线等都不适用于三角锥体。'
A:Relief grooves B:Casting corners C:Bosses D:Chamfers E:Tool recesses
AI参考:正确选项为D:Chamfers，即倒角特征。在机械加工中，倒角是一种常见的工艺特征，用于去除材料并使表面更加平滑。选项A、B、C和E描述的特征与机械加工中的工艺特征不符。因此，正确答案是D：Chamfers。'
A:outside diameter B:root diameter C:pitch diameter D:pitch
A:错 B:对
A:对 B:错
A:错 B:对
A:对 B:错
A:对 B:错
A:错 B:对
AI参考:正确答案是B：对。\r根据题干中的描述，我们可以看到外部圆柱面和内部圆柱面的交线的水平投影和侧面投影都在俯视图和左视图中的圆上，因此可以判断选项B是正确的。选项A是错误的，因为题目中没有提到交线的形状和位置。'
A:错 B:对
AI参考:B:对。根据上下文，该句子表达的是在绘图中的线条类型应该具有一致的线条宽度，而线条的虚线长度和虚线之间的间隔也应该大致一致。因此，答案为B，表示该说法是正确的。'
A:错 B:对
A:错 B:对
A:对 B:错
AI参考:【答案】B:错。解释：在CATIA软件中，命令Pad可以用于沿一个方向将草图拉伸。但是，根据题干中的描述，该命令只能沿一个方向拉伸草图，这可能是一个错误的说法。因此，答案为B：错。'
A:对 B:错
A:错 B:对
AI参考:B:对。螺线（screw thread）是指在一圆柱体表面上形成的一种具有均匀截面形状的脊线，通常用于机械制造中。因此，选项B是正确的。'
A:错 B:对
AI参考:正确答案是B：对。\r这段文字描述的是螺纹的牙顶直径应该用粗实线绘制，所以选项B“对”是正确的。'
A:错 B:对
AI参考:正确答案是B：对。根据题目描述，在一个零件的某个方向上通常有几个基准，其中一个为主基准，其他的为辅助基准。连接尺寸应该给出主基准和辅助基准之间。因此，答案为B，即对。'
A:对 B:错
AI参考:正确答案是B：错。在用截面视图来表现实体或特征时，应该尽量避免使用不完整或不能反映真实形状的元素或截面。因此，这个问题的正确答案是B，即“错”。'
A:错 B:对
A:对 B:错
AI参考:对。根据题目描述，通常情况下，切割平面应该选择正常的平面，并且切割平面会通过三维物体或旋转特征的对称平面或轴线。因此，答案为A，即“对”。'
A:对 B:错
A:对 B:错
AI参考:答案是B：错。根据题干中提到的尺寸，可以确定这个沟槽的深度是7，宽度是2.25，但没有提到直径的信息，所以沟槽的直径不能确定。因此，这个选项是错误的。'
A:错 B:对
AI参考:正确答案是【B:对】。根据题目描述，C2是一个零件倒角的一个维度，其中大写字母C代表30°。因此，这是一个正确的选项，表示该选项是正确的。'
A:错 B:对
AI参考:正确答案是B。在铸造零件中，过渡线不是零件轮廓的真实投影，而是用实线绘制。'
A:错 B:对
A:错 B:对
A:错 B:对
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