【判断题】
当拆卸滚动轴承，发现轴承座孔磨损时，可用喷涂法或刮研法修复，并经机械加工达到要求的尺寸
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相关试题
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双圆弧滚珠导轨的滚珠半径r 与滚道圆弧半径R 之比为r／R=1.0～1.05
【判断题】
用压板压紧工件进行钻孔时，垫铁应比工件压紧表面略低，以便对工件有较大的压紧力
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椭圆形和可倾瓦等轴承形式的出现，主要是为了解决滑动轴承在高速下可能发生的油膜振荡问题，以保证高速旋转机械工作稳定性
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当铰刀直径小于允许的磨损极限尺寸时,可以修磨后再用
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系统的无阻尼固有频率与系统的质量和刚度无关，只与系统受到的激励有关
【判断题】
滚动导轨的横向调平后，床身导轨平行度的检测方法是水平仪沿Z轴方向放在溜板上
【判断题】
测微螺杆的螺距P=0.5mm，微分盘刻线分为100等分
【判断题】
力对物体的作用效果取决于力的三要素，当三要素中任何一个改变时，力的作用效果就会改变
【判断题】
薄板钻又称为三尖钻，钻心尖应低于外缘刀尖1～1．5mm
【判断题】
完全互换法容易确定装配时间，便于组织流水装配线
【判断题】
当磨头主轴和轴瓦因过度磨损（修磨量大于0.1mm）导致对主轴刚度、硬度，油膜的承载能力等有严重影响时，应更换主轴和轴瓦
【判断题】
车床主轴箱齿轮齿面加工顺序为滚齿、插齿、剃齿等
【判断题】
熔断器主要由熔体和安装熔体的熔管或熔座两部分组成
【判断题】
用刚性转子的平衡方法可以解决挠性转子动平衡问题
【判断题】
在斜面上钻孔时，应先用电焊焊出一平面，然后再钻孔
【判断题】
在用自准直原理制造的量仪测量工件的平面度或直线度时，不可以任意改变平面反射镜和物镜之间的距离
【判断题】
当系统中压力不足时，首先要检查压力表是否失灵，如失灵则要更换压力表
【判断题】
龙门刨具有龙门式框架，在横梁和床身上共布置了4个刀架，每个刀架都可单独调整，能进行多刀切削
【判断题】
高速机械转子上各端面对轴心线的垂直度误差过大，会引起转子旋转时的振动
【判断题】
当Y3150 型滚齿机刀架进给丝杠的清隙油缸压力过低时，会引起刀架垂直进给爬行
【判断题】
刀具材料的基本要求是具有良好的工艺性和耐磨性两项
【判断题】
水平仪上水准器内壁为一定曲率半径的圆弧面
【判断题】
光学平直仪的使用，在机床修理中，用来检查床身导轨在水平面内和垂直面内的直线度误差，也可检查平面度误差
【判断题】
减压阀的作用是使出口压力低于进口压力并保持其近于恒定
【判断题】
液压系统的回油路上没有装设背压阀或回油单向阀，是导致设备运行时爬行的主要原因
【判断题】
高速滚珠丝扛螺母副的结构采用的是内循环反向的器式
【判断题】
位置开关与按钮开关的作用相同，都是对控制电路发出指令的电器
【判断题】
轴系找中的最终目的，要保证两个转子在正常运行状态下的同轴度要求，根据这一要求，只考虑冷态和转子静止时的同轴度来进行轴系找中即可
【判断题】
职工在生产中，必须集中精力，严守工作岗位
【判断题】
齿轮每转一周的最大转角误差，可通过检查齿圈径向圆跳动和公法线长度变动来反映
【判断题】
燕尾槽底面的宽度通常用内径千分尺直接测量
【判断题】
量棒又称检验棒、心棒，在机修作业中，可用于测量机床主轴的径向圆跳动、圆柱度
【判断题】
在轴颈上钻孔就是在轴的外圆上钻出与轴线垂直并通过圆柱中心的孔，一般可通过V 型铁、压板进行装夹
【判断题】
接拆地线应由两人进行，一个监护，一人操作，应戴好绝缘手套，接地线时先接导线端后接地线端，拆地线时先拆地线端，后拆导线端
【判断题】
在检测外圆磨床床身横向导轨和纵向导轨的垂直度误差时，先以刮好的横向导轨的单条平面导轨为基准，使方框角尺的工作面与之平行并固定
【判断题】
在进行了平衡工作后的旋转体，不允许有剩余不平衡量的存在
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That young man has made so much noise that he ___ not have been allowed attend the concert. ___
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I’m busy now ,ask him to see me ____ time.___
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They said that they had made up their minds to ____the task in spite of the extremely difficult conditions.___
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The two girls are getting on very well and share with each other. ___
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A. but for
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______you choose， make sure that it is a good one. ___
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Vingo was released from prison_____the successful efforts of his friends to prove his innocence. ___
A. according to
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Entering the room， I found my father __ at the desk and ___ something .___
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Cake __________ of flour, sugar, egg and some other ingredients. ___
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Mr. Peter wanted Steve to take half the money, but Steve did not __________ it. ___
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I'd like to take my picture ________stands a high tower. ___
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__________ the English examination I would have gone to the concert last Saturday. ___
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Cars moved very slowly in the 1920s, but they ______move more quickly than in 1910.___
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The little girl needs __________ after her shock. ___
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The __________ horse ran away from the fire.___
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He is __________ of an actor. ___
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You can take ______ seat you like. ___
A. no matter what
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He changed his name， _____ that nobody would find out what he had done before. ___
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----- _______is your English teacher？ ----- The one in red. ___
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Can you give me a light for my cigarette? I have ____my matches.___
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Then the speaker __________ the various factors leading to the present economic crisis.___
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I know Jonathan quite well and never doubt_____ he can do a good job of it___.
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I'm afraid it ______ tomorrow, but who knows?___
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He has spent ____money on his new house.___
A. a large number of
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This is the hotel __________ I like to stay.___
A. in which
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Would you mind keeping a（n）__________on the house for us while we are away？___
A. eye
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He suggested the sports meet be _______because of the bad weather. ___
A. put away
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If the weather is __________ suitable, we will play the football match on Tuesday. ___
A. by means of
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_____________is one of the five working languages at U.N. , which _______ are very proud of.___
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Tom is so talkative. I’m sure you'll soon get tired ________ him.___
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He ________ driving me home, even though I told him I lived nearby.___
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I am not used to speaking ________ public.___
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