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全站基槽均为机械开挖,同时为保持一个平整的施工现场,达到文明施工的要求,根据现场情况将所挖出的土、石方只要不是立即回填的,便站外租地存放。Subsequently,theAnhuiArmymilitarySpecialBranch,inShanghai'sCentralIntelligenceOrganizationandtheCommunistpartyorganizationinWesternZhejiangProvince,sentpartybackbone,respectively,wenttoWuJiangyanopenedtheTomb,Tombofheroicpeople,undertheleadershipoftheCommunistParty,fearnosacrificeandpersevering,goaloftheanti-Japaneserevolutionarystruggle.(A)stationedinTaoyuanarea(Tombof)1,thenewarmyoftheCommunistPartyofChinaundergroundorganizationinSeptember1938,theCPCZhuangShaozhen(ZhuangZhen,Nanxunpeople)bytheDeputyDirectorofthepoliticalDepartmentofthearmyonDengZihui'sdispatch,operatingfromJingCounty,AnhuiProvince,theLakereachedtheTomb,itstasksare:lookingforreliableobject,introducethemtothenew,toexpandthenewteam.ZhuangShaozhenKMT-CPCcooperationasanopportunity,afterclassmatesYaoBi(Nanxunpeople,RenZhuxiforcestaffDirector),introducedintotheKuomintanggovernmentpoliticalteam,andasapoliticalleader.HeusedthisopportunitytoinviteprogressiveyouthHongHaiquanformapoliticalteam,atthispoint,theCountyGovernmenthasjustbeenestablished,localschool,unemployedyoutharemorequicklyabsorbedsheng,zhenze,Miaogang,Nanxun,huzhou,morethan20morethanrequired-Japaneseyouth.Inordertoraisethelevelofpoliticalplayersandtheabilitytowork,ZhuangShaozhenXuTemple,isfortheestablishmentofyouth...PoliticalactivitieswillsoonattracttheattentionoftheKuomintang.IsearlyZhuangShaozhenindicatingHongHaiquantoscoopthefirstelementaryschool,teacher'sidentityasacover,carryouttheparty'swork.However,CountyDirectorofeducationcomesintoaction.To《机械设计基础》试题库教材名称及版本:《机械设计基础》第三版编者及出版社:黄华梁、彭文生主编高等教育出版社试题题型:判断题序号能力层次难度.1理解B构件和零件均是运动单元。答案(×)2理解B零件是机械的最小单元。答案(√)3理解B车床,颚式破碎机,减速器都称为机器。答案(√)4理解B机械是机器和机构的总称。答案(√)5理解B任何零件都需要有很大的刚度。答案(×)6理解B合金刚的优良性能,只取决于它的化学成分。答案(×)7理解BQ235、35、45均为优质碳素钢。答案(×)8理解B制作形状复杂的零件可用铸铁。答案(√)9理解B牌号为Q235的钢为优质碳素钢。答案(×)10理解B45号钢就是含碳量为45/10000的优质碳素钢。答案(√)11理解B牌号为ZG270—500是铸钢。答案(√)12理解B机械设计的强度准则就是,。答案(√)13理解B15号钢为普通碳素钢。答案(×)14理解B淬火是为了改善切削性能,消除内应力,使材料的晶粒细化。答案(×)15理解B淬火可提高材料的硬度和强度,并消除内应力。答案(×)16理解B通过对材料调质处理可得较好的综合性能。答案(√)17理解B机器与机构它们都是人为的产物,有确定的运动,并有能量的转化。答案(×)18理解B机械中常用的有色金属有合金钢、铜合金、铝合金。答案(×)19理解B木料、工程塑料、橡胶均属非金属材料。答案(√)20理解B牌号为QT500-7表示球墨铸铁,baMP500,伸长率为7%。答案(√)21理解B构件系统的自由度为F(0),若给定的原动件数目等于F,该传动系统能成为机构。答案(√)22理解B一切自由度不为1的机构,其各构件之间都不可能具有确定的相对运动。答案(×)23理解B机构主要是由主动件、从动件和机架组成。答案(×)《机械设计基础》试题库全站基槽均为机械开挖,同时为保持一个平整的施工现场,达到文明施工的要求,根据现场情况将所挖出的土、石方只要不是立即回填的,便站外租地存放。Subsequently,theAnhuiArmymilitarySpecialBranch,inShanghai'sCentralIntelligenceOrganizationandtheCommunistpartyorganizationinWesternZhejiangProvince,sentpartybackbone,respectively,wenttoWuJiangyanopenedtheTomb,Tombofheroicpeople,undertheleadershipoftheCommunistParty,fearnosacrificeandpersevering,goaloftheanti-Japaneserevolutionarystruggle.(A)stationedinTaoyuanarea(Tombof)1,thenewarmyoftheCommunistPartyofChinaundergroundorganizationinSeptember1938,theCPCZhuangShaozhen(ZhuangZhen,Nanxunpeople)bytheDeputyDirectorofthepoliticalDepartmentofthearmyonDengZihui'sdispatch,operatingfromJingCounty,AnhuiProvince,theLakereachedtheTomb,itstasksare:lookingforreliableobject,introducethemtothenew,toexpandthenewteam.ZhuangShaozhenKMT-CPCcooperationasanopportunity,afterclassmatesYaoBi(Nanxunpeople,RenZhuxiforcestaffDirector),introducedintotheKuomintanggovernmentpoliticalteam,andasapoliticalleader.HeusedthisopportunitytoinviteprogressiveyouthHongHaiquanformapoliticalteam,atthispoint,theCountyGovernmenthasjustbeenestablished,localschool,unemployedyoutharemorequicklyabsorbedsheng,zhenze,Miaogang,Nanxun,huzhou,morethan20morethanrequired-Japaneseyouth.Inordertoraisethelevelofpoliticalplayersandtheabilitytowork,ZhuangShaozhenXuTemple,isfortheestablishmentofyouth...PoliticalactivitieswillsoonattracttheattentionoftheKuomintang.IsearlyZhuangShaozhenindicatingHongHaiquantoscoopthefirstelementaryschool,teacher'sidentityasacover,carryouttheparty'swork.However,CountyDirectorofeducationcomesintoaction.To2724理解B两构件通过点或线接触组成的运动副是高副。答案(√)25理解B高副引入的约束数为2。答案(×)26理解B两构件通过面接触组成的运动副是低副。答案(√)27理解B平面低副引入的约束数为1。答案(×)28理解B每个运动副都是一个构件。答案(×)29理解B凡是有滚子的地方都存在局部自由度。答案(×)30理解B机构的自由度就是构件的自由度。答案(×)31理解B复合铰链与转动副和移动副都有关。答案(×)32理解B转动副和移动副都是平面低副。答案(√)33理解B平面机构和自由度为2,说明需要2个原动件才能有确定运动。答案(√)34理解B机构中每个主动件相对机架可以有几个独立运动。答案(×)35理解B在绘制机构运动简图时,不仅要考虑构件的数目,而且要考虑构件的构造。答案(×)36理解B在平面机构中,自由度的减少数就等于约束数。答案(√)37理解B机构可能会有自由度F0的情况。答案(×)38理解B当m个构件用复合铰链相联接时,组成的转动副数目也应为m个。答案(×)39理解B局部自由度与机构的运动是有关的。答案(×)40理解B在机构运动简图中运动副和构件都应用规定的符号和线条表示。答案(√)41理解A在曲柄摇杆机构中,当以曲柄为主动件时,最小传动角出现在曲柄与机架两个共线位置处。答案(√)42理解A曲柄摇杆机构的行程速比系数K不可能等于1。答案(×)43理解A压力角愈大,传动角P愈小,机构的传动性能愈好。答案(×)44理解A铰链四杆机构中,若存在曲柄,其曲柄一定是最短杆。答案(×)45理解A曲柄滑块机构一定具有急回运动性质。答案(×)46理解A平面连杆机构的传动角愈大,则机构的传力性能愈好。答案(√)47理解A若要使机构受力良好,运转灵活,希望其传动角大一些好。答案(√)48理解A平面连杆机构的优点为容易实现较复杂的运动。答案(×)49理解A在曲柄摇杆机构中,当曲柄为原动件时,该机构出现死点位置。答案(×)50理解A扩大转动副可将铰链四杆机构演化成偏心轮机构。答案(×)51理解A铰链四杆机构中传动角为45时,传动数率最大。答案(×)52理解A机构的死点位置就是=0的位置。答案(√)54理解A为了保证机构传动性能良好,设计时应使min。答案(×)55理解A对心式曲柄滑块机构有曲柄的条件为ab。答案(×)56理解A偏置式曲柄滑块机构有曲柄的条件为a+eb。答案(√)57理解A若要使机构有急回特性,0。答案(√)全站基槽均为机械开挖,同时为保持一个平整的施工现场,达到文明施工的要求,根据现场情况将所挖出的土、石方只要不是立即回填的,便站外租地存放
本文标题:机械设计基础判断题
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