[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fjAy_gqXUeTN_N0T6a8QLOi5tI-zOSecFlhwC9QwV8rE":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-05-12 21:37:57",8206230,[8,9,10,11],"1为钢,2为铸铁","两杆均为钢","1为铸铁,2为钢","两杆均为铸铁",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},24,"b81e5e8d11f958a3f099c19e8461860b","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff0b1a79d4ec768a3309da42a3bb1c884.jpg","材料力学-2022-2023-2","1fd294d66bfd458fba57ca8bb7cf2d71","一二章章节测试","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9fa5233b7ff7a3689ac7094e48f9271a.webp\">现有钢、铸铁两种棒材,其直径相同,从承载能力和经济效益两方面考虑,图示结构两杆的合理选材方案是",[21,32,41,50,59,68,77,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],8206224,[25,26,27,28],"不发生断裂","保持原有平衡状态","不产生变形","保持静止","构件在外力作用下()的能力称为稳定性","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],8206225,[36,37,38,39],"内力大于应力","内力等于应力的代数和","内力是矢量,应力是标量","应力是分布内力的集度","内力和应力的关系是( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],8206226,[45,46,47,48],"强度条件","刚度条件","稳定性条件","硬度条件","工程构件要正常安全的工作,必须满足一定的条件.下列除( )项,其他各项是必须满足的条件",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],8206227,[54,55,56,57],"铸钢","玻璃","松木","铸铁","在下列四种材料中,( )不可以应用各向同性假设",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],8206228,[63,64,65,66],"23%","59%","46%","15%","标距为100mm的标准试件,直径为10mm,拉断后测得伸长后的标距为123mm,颈缩处的最小直径为6.4mm,则该材料的δ为",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":31},[],8206229,[72,73,74,75],"轴力不等,应力相等","轴力相等,应力不等","轴力和应力都相等","轴力和应力都不等","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F54e9b77fdeb56db2a4929cd11344f7d7.webp\">图示阶梯杆AD受三个集中力F作用,设AB、BC、CD段的横截面面积分别为A、2A、3A,则三段杆的横截面上",{"answer":78,"createTime":5,"id":6,"options":79,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],8206231,[84,85,86,87],"轴向拉压杆的内力只有轴力","轴力的作用线与杆轴线重合","轴力是沿杆轴线作用的外力","轴力与杆的横截面和材料无关","以下关于轴力的说法中,哪一个是错误的",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],8206232,[93,94,95,96],"-5P","-2P","-7P","-P","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd48cd1d3861033a111a0cd2a567554f7.png\">计算M-M面上的轴力",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],8206233,[102,103,104,105],"AB段轴力大","BC段轴力大","轴力一样大","无法判断","图示结构中,AB为钢材,BC为铝,在P力作用下( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F064a8ab5a77aaa2c82734f6c953ec2b8.png\">"]