[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fXdMa9RQtHhmPuY-M8O61g_UPvo7-3zW7yZO5gV6qI5E":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-10-29 03:28:16",225405599,[8,9,10,11],"化学成分","抗拉强度","伸长率","冷弯试验",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},35,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_45678029","正确评价《天朝田亩制度》和《资政新篇》","Q235钢按照质量等级分为A、B、C、D四级,由A到D表示质量由低到高,其分类依据是()",[21,32,41,50,59,62,70,75,80,85],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],225405590,[25,26,27,28],"将使钢材在低温工作时变脆","将使钢材在高温工作时变脆","将提高钢材的伸长率","将提高钢材的抗拉强度","钢材中硫的含量超过规定标准()","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],225405592,[36,37,38,39],"等肢角钢","不等肢角钢","钢板","槽钢","符号∟125×80×10表示()",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],225405594,[45,46,47,48],"钢材的抗拉强度是235MPa","钢材的屈服强度是235MPa","钢材的比例极限是235MPa","钢材的伸长率是235με","钢材牌号Q235代表的是()",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],225405595,[54,55,56,57],"弹塑性","塑性","非弹性的","弹性","在钢结构设计中,认为钢材是理想的弹塑性体,是指屈服点以前的材料为()",{"answer":60,"createTime":5,"id":6,"options":61,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":63,"createTime":5,"id":64,"options":65,"question":68,"source":30,"type":69},[],225405600,[66,67],"正确","错误","当温度t<0℃时,随着温度下降,钢材的冲击韧性值也随之下降",3,{"answer":71,"createTime":5,"id":72,"options":73,"question":74,"source":30,"type":69},[],225405608,[66,67],"钢材随时间进展将发生屈服强度和抗拉强度提高、塑性和冲击韧性降低的现象,称为时效硬化",{"answer":76,"createTime":5,"id":77,"options":78,"question":79,"source":30,"type":69},[],225405612,[66,67],"建筑钢材中严格控制硫的含量,在Q235钢中不得超过0.05%,在Q345钢中不得超过0.045%,这是因为含硫量过大,在焊接时会引起钢材的热脆",{"answer":81,"createTime":5,"id":82,"options":83,"question":84,"source":30,"type":69},[],225405619,[66,67],"钢材的伸长率是衡量钢材塑性性能的指标,是通过一次静力拉伸试验得到的",{"answer":86,"createTime":5,"id":87,"options":88,"question":89,"source":30,"type":69},[],225405627,[66,67],"在结构承载能力极限状态计算时,应采用荷载的设计值"]