[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fTtLmI7mW6EhS1qrOcd7qCUt8NhtT1icxrPYfmdlugiY":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-11-12 11:47:13",105234488,[8,9,10,11],"化学成分","冶炼炉型","用途","脱氧程度",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},28,"f2495fa03da7a23205cd25a160d5c66e","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7e2d5ad53be3d12aacc56ee37db405b7.jpg","建筑材料与检测","6948fc18bfd94dd0aa215eff82f62c4d","建筑钢材","钢材按( )划分为沸腾钢、半镇静钢及镇静钢()",[21,32,41,50,59,68,71,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],105234483,[25,26,27,28],"增加","降低","不变","不一定","随着含碳量的增加,钢材的强度提高,其塑性和韧性()","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],105234484,[36,37,38,39],"外力取消后仍保持变形后的现状和尺寸,不产生裂缝","外力取消后仍保持变形后的现状和尺寸,但产生裂缝","外力取消后恢复原来现状,不产生裂缝","外力取消后恢复原来现状,但产生裂缝","塑性的正确表述为( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],105234485,[45,46,47,48],"硫、磷杂质的含量由多到少","硫、磷杂质的含量由少到多","碳的含量由多到少","硅、锰的含量由多到少","普通碳素结构钢按( )分为A、B 、C 、D 四个质量等级",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],105234486,[54,55,56,57],"Si、Mn","S、P","Al、Ti","V、Nb","以下对于钢材来说有害的元素是( )",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],105234487,[63,64,65,66],"0.50-0.65","0.60-0.75","1.2-1.25","1.25-1.30","有抗震要求建筑结构钢合理的屈强比比一般为()",{"answer":69,"createTime":5,"id":6,"options":70,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":30,"type":31},[],105234489,[75,76,77,78],"颈缩阶段","强化阶段","屈服阶段","弹性阶段","钢材拉伸过程中的第二阶段是( )",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],105234490,[84,85,86,87],"屈服强度","极限强度","弹性极限","比例极限","( )作为钢材设计强度()",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],105234491,[93,94,95,96],"拉伸性能","抗冲击性能","冷弯性能","抗疲劳性能","最能揭示钢材内在质量的性能是()",{"answer":99,"createTime":100,"id":101,"options":102,"question":107,"source":30,"type":31},[],"2023-11-12 11:47:14",105234492,[103,104,105,106],"热脆性","冷脆性","强度","硬度","硫会增大钢材的()"]