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39501如果原物体两线段平行，则该线段的轴测投影也不一定平行。
39502正等轴测图和斜等轴测图都是p=q=r。
39503轴测图是沿着不平行任一坐标面的方向用平行投影法将其投射到单一投影面P上得到的投影视图。
39504关于正等轴测图与斜二轴测图的画法的比较，选项中哪个说法是正确的
39505选择下列正确的选项（）
39506下列关于轴测图说法正确的是
39507点M的投影正确与否。
39508锥面上点M的投影正确与否。
39509图中关于点N的投影正确与否。
39510点M在棱锥上，投影正确与否。
39511棱锥上点M的投影正确与否。
39512水平投影上，可以反映的位置是
39513正面投影与水平投影的投影规律是
39514拉伸命令可以构建实体。
39515平移扫描法得到的实体，其构造是具有相同剖面形状的。
39516平面图形画图时，首先要绘制已知圆弧，再绘制中间圆弧，最后完成连接弧的绘制。
39517AutoCAD中绘制对称图形时，可以先画一半，再使用镜像命令完成另一半的绘制。
39518AutoCAD画图时，图形位置不能移动。
39519AutoCAD中，如何找到切点
39520AutoCAD画图样时，要使用国家标准规定的样板图。
39521图中R12的圆心确定方法是
39522经陈列而得到的图形中，字图形的大小和形状均没有变化。
39523斜度1：5，锥度1：5是同一概念。
39524圆内接正六边形，圆的直径等于等于：
39525镜像构形构造的图形时对称的。
39526描深图形时，要按不同的线型选择不同的铅笔。
39527AutoCAD中，输入长度为20mm的与X轴平行的直线的方法是
39528圆规画圆时，钢针、铅芯与图纸的位置
3952930度和60度三角板，45度三角配合使用可以绘制角度为45度的斜线。
39530捕捉直线段的端点的正确操作是
39531建立样板图需要按国标建立图层。
39532虚线的使用范围
39533图形实际尺寸为20mm，当采用2：1的比例绘制时，标注尺寸为
39534标题栏的位置
39535由两点的坐标值判定两点的相对位置的方法正确的是
39536点在三投影面体系中的投影规律，下列描述正确的是
39537关于投影面平行于H面的投影特性，哪个说法是正确的？
39538工程图学是研究工程图样表达与技术交流的一门学科。
39539工程图样可以用二维图形表达方法为：
39540在科学研究中，图形具有形象性、直观性和简洁性的特点。
39541工程制图课程的基础性是指：
39542工程制图课程的通用性是指：
39543工程制图课程的任务就是培养绘图能力。
39544工程制图课程的制图基础是指：
39545课程目标中，培养图形表达能力、理解能力是指：
39546工程图样是：
39547下面哪些方法有助于学习好这门课？在学习过程中，注重基本概念和基本规律的掌握，注重实践，多观察、思考、研讨自己身边的所见产品，借助模型、轴测图、实物等增加生产实践知识和表象积累，培养和发展空间想象能力和思维能力。将物体和图样相结合，由浅入深，通过由空间到平面，由平面到空间的反复读、画、想的实践进行学习。同时要及时、认真地完成习题和作业
39548When two part'；s surface contacting， there had better be only one pair of contact surfaces in the same direction。
39549Technical requirements on a detail drawing include surface texture， dimension tolerance， geometrical tolerance， heat treatment and surface treatment， machining and inspection， and other special requirements。
39550Overall dimensions show the（） of the composite solid
39551Inside the block，you should sign your name and object name。
39552A group of views：
39553Necessary dimensions includ
39554The contents of assembly drawings
39555we can find the material from title block。
39556The upper deviation is ：maximum size-basic size and the lower deviation is ：minimum size-basic size。
39557When represent a shaft， the non-circular view should be chosen as main view。
39558The dimension chain should be closed。
39559What principle does one should follow in set position of a part？
39560In hole based system of fit， what is the basic devitaion symmbol of the hole
39561What is the fit of H7/f6？
39562How much is the upper deviation of h6
39563What is the most commonly used evaluation parameter of surface roughness
39564What is the unit in Ra6.3？
39565In circular view， the notch of screw head should be drawn with an inclind angle of（）
39566When draw internal thread， major diameter is drawn as thin line ， minor one is drawn as thick line in non circular view.
39567In the symbol of key 16X100 GB/T 1096-2003， what does 100 mean？
39568Keyway inside a wheel is normally through。
39569The addendum circle is larger than pitch circle， and the dedendum circle is the smallest one。
39570In stud joint， the length ，Bm of metal end depends on material connecteD.A.Bm=1.25d or 1.5d for cast iron
39571In screw joint， the end line should be drawn at the position of
39572Whe two adjacent part are cut， the hatching direction shall be reverese.
39573What is the diameter relationship between hole and bolt？
39574what does the 6 mean in symbol of washer GB/T 97.1-2002 6
39575what does M， Tr， R mean respectively in thread marks？
39576What does LH mean in thread marks？
39577When a inclined cutting plane is used， the inclined sectional view can be rotated at an angle of less than 45°.
39578When a cutting plane pass through the symmetric position， the labeling location symbols can be omitteD.
39579The position of labeling the name letters for a sectional view should be above its view。
39580When a cutting plane pass through symmetric position of a rib， there should be no hatching on the area of the rib.
39581The cut is represented only on the croosection， but the section is represented for all the visible outlines。
39582The arrow head can be omitted when the cut structure is symmetry，。
39583Superposition cut is represented as thick line and is put inside the original view。
39584when several parallel cutting planes are used to cut， there will be a bold line at the corner of turning point.
39585An object be represented as local section in the condition that both the outside and inside are complex， and its structure is not symmetry。
39586How much is the inclined angle of hatching for the commonly used metallic material
39587The three types of dimension include shape dimension， location dimension and overall dimension。
39588The overall length is necessary for a round end plate.
39589longer dimension should be outside of short ones.
39590How much is the axes angle of isometric projection
39591is the dashed line necessary in isometric projection？
39592What type of intersection line can you get， when a sphere cut by a plane？
39593If a line is parallel to any line in a plane， the line is parallel to the plane.
39594Two lines are parallel in space provided that their respective projections on two projection planes are parallel.
39595The true length projection of a line appears in a projection plane that is parallel to the line。
39596If two projections of two lines are parallel， then the two lines are parallel in space。
39597How many relationships between two lines？
39598How many types of parallel line are there relative to projection plane？
39599How can you represent V projection of a point？
39600Which coordinates are related to H projection of a point？
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