工程制图（双语）期末答案2023秋

1.The projection line which connects frontal projection and profile projection is perpendicular to axis .
A:OZ B:OX C:OY
答案:AI参考:答案：B:OX。\n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。'
2.

Is point K in line AB? 

答案:AI参考:正确选项是：No，point K is not in line AB.\n\n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。'
3.

In CATIA software, the command       is used to           ?

A:go into Drafting workbench B:go into Sketcher workbench C:draw circles D:draw arcs
答案:AI参考:正确选项是【B:go into Sketcher workbench】。\n\n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。'
4.

According to the projections, line AB is a               .

A:Oblique line B:Horizontal line C:Profile line D:Frontal line
答案:AI参考:正确选项是【B:Horizontal line】。\n\n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。'
5.

According to the figure, which of the following is correct?

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.
答案:AI参考:正确选项是【C:Line MN is in plane ABC.】\n\n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。'
6.

This is a triangular pyramid, what kind of lines are included in the solid?

A:W-perpendicular line B:Horizontal line C:H-perpendicular line D:Profile line E:Oblique line
答案:AI参考:正确选项为【C:H-perpendicular line】。\n\n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。'
7.If the major diameter of a thread is d,the minor diameter d1 approximately equals .
A:0.85d B:0.75d C:1.1d D:d
答案:0.85d
8.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?
A:Thin phantom lines B:Thick solid lines C:Thin center lines D:Wavy lines
答案:Wavy lines
9.The profile projection of a point can give the of the point.
A:Coordinate Y and coordinate Z B:Coordinate X and coordinate Y C:Coordinate X and coordinate Z
答案:Coordinate X and coordinate Y
10.When a sphere is cut by a plane, the intersection of the spherical surface of the sphere and the plane could be a(an)            .
A:Line B:Ellipse C:Parabola D:Circle E:Hyperbola
答案:Circle
11.When two external cylindrical surfaces intersect to each other, which of the following description is correct about the intersection?
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. 12.Which of the following description can not be acquired from assembly drawing?
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. 13.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?
A:7 B:1 C:6 D:2 14.Inclined view should be spacified with arrow and letter, the method to give the letters is that .
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 15.In using AutoCAD software, when set a layer, which of the following items should be specified?
A:Color B:Linetype C:Lineweight D:The name of the layer 16.The diameters of screw threads include .
A:available diameter B:major diameter C:pitch diameter D:minor diameter 17.In AutoCAD software, what of the following groups of commands are placed at the same place?
A:Fillet and Chamfer B:Circle and Arc C:Trim and Extend D:Mirror and Copy 18.What are the projection properties of horizontal line?
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. 19.According to the shapes of the thread forms, screw threads include , and others.
A:metric thread B:rectangular thread C:pipe thread D:acme thread 20.In CATIA software, there are several tool bars which are used in constructing models of solids in Part Design workbench, including , and the others.
A:Transformation Features B:Dress-Up Features C:Sketch-Based Features D:Constraints 21.Which of the following features are machined technical features?
A:Relief grooves B:Casting corners C:Bosses D:Chamfers E:Tool recesses 22.When views of spur gears are drawn, there are several parameters which should be given, include , and the others.
A:outside diameter B:root diameter C:pitch diameter D:pitch 23.Revolved sections are the sections which are individually drawn outside of the original view, with the boundary lines drawn in thick solid lines.
A:错 B:对 24.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.
A:正确 B:错误 25.In mechanical drawings, the dimensions of the parts should be given according to the drawing scales.
A:错 B:对 26.Dimensions in a detail drawing indicate the final size of the finished part.
A:对 B:错 27.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.
A:对 B:错 28.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.
A:错误 B:正确 29.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.
A:错 B:对 30.When a machine part is drawn only half of it, the dimensions should be given according to the half size of it.
A:错 B:对 31.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.
A:错 B:对 32.In CATIA software, the command Pad      can be used to extrude a sketch only along one direction.
A:正确 B:错误 33.When the spur gears are drawn in sectional views, the section lines should be drawn in gear tooth portions.
A:对 B:错 34.A ridge of uniform cross section in the form of helix on the surface of a cylinder is named screw thread.
A:错 B:对 35.Crest diameter of screw thread should be drawn in thick solid line .
A:错 B:对 36.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.
A:错误 B:正确 37.When sectional views are used to represent solids or features, try to avoid incomplete elements or sections that do not reflect real shapes.
A:对 B:错 38.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.
A:错 B:对 39.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.
A:对 B:错 40.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.
A:对 B:错 41.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.
A:对 B:错 42.C2 is a dimension of a chamfer of a part, in which capital letter C is used to stand for 30°.
A:错误 B:正确 43.Transition lines in a casting part are not real projections of outlines of the part， they are drawn in thin solid lines.
A:错误 B:正确 44.In sectional views, the invisible outlines behind the cutting planes should be drawn in dashed lines.
A:错 B:对 45.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.
A:错误 B:正确 46.Pitch of screw thread is the axial distance between the two adjacent teeth at the corresponding points on the crest line.
A:错 B:对