机泵维修钳工中级理论知识试卷

机泵维修钳工中级理论知识试卷职业技能鉴定国家题库机泵维修钳工中级理论知识试卷注意事项1、考试时间:120分钟。

2、请首先按要求在试卷的标封处填写您的姓名、准考证号和所在单位的名称。

3、请仔细阅读各种题目的回答要求，在规定的位置填写您的答案。

4、不要在试卷上乱写乱画，不要在标封区填写无关的内容。

一二三四总分得分得分评分人一、单项选择(第1题,第493题。

选择一个正确的答案，将相应的字母填入题内的括号中。

每题0.5分，满分246.5分。

)1. 画零件图时，应优先选用( )的比例。

、1?2 B、2?1 C、1?4 D、1?1 A答案:D2. 画零件草图时，通常是( )。

A、边测尺寸边画图B、先测量后画图C、先画图后测量D、只画图不测量答案:C3. 机件上与视图( )的平面(或直线)，在该视图面上的视图积聚成一条直线(或一个点)。

A、平行B、倾斜C、垂直D、平行或垂直答案:C4. 在正常配置的3个基本视图中，机件上对应部分的主、左视图( )。

A、高平齐B、长对正C、宽相等D、宽不等答案:A5. 如果平面在3个基本视图中，有两个视图出现积聚性，则该平面在另一视图中必然。

( )A、显真形B、类似C、积聚D、显实形地区准考证号姓名单位名称答案:A6. 机械制图中，齿轮的分度圆用( )画出。

A、粗实线B、细点划线C、细实线D、波浪线考生答题不准超过此线答案:B7. 机械制图中，有效圈数在( )以上的螺旋弹簧只画出两端的1,2圈。

A、6圈B、5圈C、4圈D、3圈答案:C8. 零件图的尺寸标注必须符合( )标准的规定画法。

A、国家B、部颁C、行业D、工厂 their own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence and coverage of the brand, the implementation of key breakthroughs, toenhance the competitive strength, walking business road the competition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resources within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking win-win principle, in the framework of national policies and regulations, strict inspectionand argumentation, legal consultation, examination and approval procedures, strict regulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the development, ensure that the value of state-owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training of cadres and workers of theexisting business, firmly establish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to market competition, improve management and operation of the market. At the same time, according to the need of industrial development, vigorously the introduction of high-quality management management personnel, and strive to build a high-quality professional management team, hard work, and promote the entireworkforce knowledge structure, age structure, structure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy. Serious research about social support the development of cultural undertakingsin the country and the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development.答案:A9. 机械制图中，局部视图的断裂边界应以( )表示。

A、细实线B、波浪线C、粗实线D、虚线答案:B10. 为了表达机件内部结构，机械制图时常采用( )。

A、剖视方法B、基本视图方法C、剖面方法D、局部放大方法答案:A。

11. 不属于表达机件结构形状的基本视图是( )A、主视图B、斜视图C、俯视图D、右视图答案:B12. 金属材料的剖面符号中，其剖面线应画成与水平线成( )角的细实线。

A、30?B、35?C、45?D、40? 答案:C13. 用几个互相平行的剖切平面剖开机件的方法称为( )。

A、全剖视B、半剖视C、局部剖视D、阶梯剖答案:D14. 用剖切平面局部地剖开机件，所得的剖视图，称为( )。

A、半剖视图B、局部剖视图C、全剖视图D、复合剖视图答案:B15. 当机件对称，且在图上恰好有一轮廓线与对称中心线重合时，采用半剖视有矛盾，此)。

时也可采用(A、局部剖视B、全剖视C、旋转剖视D、阶梯剖答案:A16. 允许加工误差存在的范围，称为( )。

A、偏差B、公差C、误差D、极限偏差答案:B，0.027,4017. mm的最大极限尺寸是( )。

，0.002A、φ40 mmB、φ40.002 mmC、φ40.027 mmD、φ40.005 mm 答案:C18. 不属于加工误差的是( )。

A、尺寸误差B、形状与位置误差C、微观几何形状误差D、测量误差答案:D19. φ40 mm?0.008 mm的最小极限尺寸是( )。

A、0 mmB、φ40 mmC、φ40.008 mmD、φ39.992 mm 答案:D20. 公差是最大极限尺寸与( )之差。

A、最小极限尺寸B、公称尺寸C、上偏差D、下偏差答案:A，0.015,4021. mm的公差为( )。

,0.010A、0.005 mmB、0.010 mmC、0.015 mmD、0.025 mm 答案:D，0.018,6022. 轴颈处注有 mm则其公差为( )。

,0.012A、0.018 mmB、0.03 mmC、-0.012 mmD、0.006 mm 答案:B23. 最大极限尺寸可以( )基本尺寸。

their own conditions to develop the correct road, the maximum toavoid investment risk, gain profit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business road the competition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the integration of resources. To further broaden their horizons,effective integration of resources within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking win-win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examination and approval procedures, strict regulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the development, ensure that the value of state-owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training of cadres and workers of the existing business, firmly establish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to market competition, improve management and operation of the market. At the same time, according to the need of industrial development, vigorously the introduction of high-quality management management personnel, and strive to build a high-quality professional management team, hard work, and promote the entire workforce knowledge structure, age structure, structure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy. Serious research about social support the development of cultural undertakings in the country and the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy,projects and funds, enterprise and industry group mission to promote leapfrog development.A、大于，但不能等于B、小于，但不能等于C、超出5倍以上D、大于、小于或等于答案:D24. 用以限制给定平面内或空间直线的形状误差为( )公差。