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A:<div>劳动者的劳动强度</div><div></div>
B:工厂生产产量
C:劳动者用于生产的时间比例
D:工人在单位时间内制造的合格产品的数量
<div>加工过程中，如果总切削力的大小不变，但由于其作用点位置的不断变化，使（）随之变化，将会引起工件的形状误差。</div>
A:<div>刀具的刚度</div><div></div>
B:工件的刚度
C:工艺系统刚度
D:机床的刚度
<div>绘制实际分布曲线是为了（）。</div><div></div>
A:统计废品数量
B:统计合格产品数量
C:分析工艺系统是否能够满足加工精度要求
D:其他目的
<div>车削时，零件的端面与内、外圆轴线不垂直是由于主轴的（）造成的。</div>
A:纯轴向窜动
B:纯径向跳动
C:纯角度摆动
D:轴向窜动与角度摆动的综合作用
<div>在保证质量的前提下，对装配工人的技术水平要求较低的装配方法是（）。</div><div></div>
A:<div>完全互换装配法</div><div></div>
B:分组装配法
C:修配装配法
D:调整装配法
<div>在加工轴类零件时，常用两中心孔作为（）。</div>
A:<div>定位基准</div><div></div>
B:粗基准
C:测量基准
D:装配基准
<div>根据要求的工件尺寸，利用机床上的定程装置或对刀装置预先调整好机床、刀具和工件的相对位置，再进行加工的方法属于（）。</div><div></div>
A:试切法
B:定尺寸刀具法
C:调整法
D:自动控制法
<div>凡是能直接引起工件加工误差的各种因素都称为原始误差。下面的那一项不是原始误差？（）</div><div></div>
A:刀具磨损
B:工艺系统受力变形
C:机床误差
D:主轴转速误差
<div>不具有独立变化的特征，是装配后才间接形成的，多为产品或部件的装配精度指标，这是装配尺寸链（）的基本特征。</div>
A:<div>组成环</div><div></div>
B:增环
C:减环
D:封闭环
<div>用完全互换法装配机器一般适用于（）场合。</div>
A:<div>大批大量生产</div><div></div>
B:高精度多环尺寸链
C:高精度少环尺寸链
D:单件小批生产
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">加工原理误差是由于机床几何误差所引起的。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">专用夹具是指专为某一工件而专门设计的夹具。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">表面粗糙度值越小，零件表面越光滑，摩擦阻力越小，零件越耐磨。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">工件夹紧后，位置不动了，其所有自由度就都被限制了。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">延长工作时间是提高劳动生产率的一种方法。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">零件结构工艺性是指在满足使用要求的前提下零件制造的可行性和外形设计的美观性。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">测量基准是设计基准的一种。</span>
A:错误
B:正确
<div>在一个工艺尺寸链中，封闭环、增环和减环三者缺一不可。</div>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">生产纲领包括一定的备品和废品的数量。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">工件加工时，采用不完全定位和欠定位都是允许的。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">凡是用加工过的表面做定位基准，不论该表面精度如何，都称作精基准。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">零件表面粗糙度越小，抗疲劳能力越强。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">采用机床夹具装夹工件，主要是为了保证工件加工表面的位置精度。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">工艺规程设计的是否合理只要看它可否保证零件的加工质量就行。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">大批大量生产时，通常采用直接找正装夹或划线找正装夹。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">在装配尺寸链中，封闭环就是装配精度要求。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">在工艺文件上用以标定被加工表面位置所采用的基准叫定位基准。</span>
A:错误
B:正确
<div>用夹具装夹工件时，工件相对于刀具及机床的位置精度由夹具保证，不受工人技术水平的影响。</div>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">误差复映是由于工艺系统受力变形所引起的。</span>
A:错误
B:正确
<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">现代化的大量生产都采用工序分散原则。</span>
A:错误
B:正确
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发表于 2020-8-8 19:00:08
