[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fcDs8cp0ghNgAilavf-cIroP5X-GDrKGrJ6XO41TMilU":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":15,"related":16,"source":26,"type":27},[],"2025-12-26 09:08:37",1076181735,[8,9,10,11],"N\u002FG很大时","N\u002FG很小时","N\u002FG居中时","N很大时,与G无关",{"courseImg":13,"courseName":14},"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3d67f638324d9ba2bf96abdb80c31cc9.png","工程材料（山东联盟）","实际金属结晶时,通过控制生核速率N 和长大速度G的比值来控制晶粒大小,在下列情况下获得粗大晶粒( )",[17,28,37,46,55,61,70,79,88,97],{"answer":18,"createTime":5,"id":19,"options":20,"question":25,"source":26,"type":27},[],1076181446,[21,22,23,24],"碳含量","合金元素","冷却介质","杂质元素","钢的淬硬性主要取决于( )","v2",0,{"answer":29,"createTime":5,"id":30,"options":31,"question":36,"source":26,"type":27},[],1076181469,[32,33,34,35],"Co","Cr","Mn","Ti","除( )元素外,其它合金元素溶于奥氏体后,均能使C曲线右移",{"answer":38,"createTime":5,"id":39,"options":40,"question":45,"source":26,"type":27},[],1076181487,[41,42,43,44],"Ac1+30~50℃","Accm+30~50℃","Ac3+30~50℃","Ac1-30~50℃","过共析钢正常的淬火加热温度是( )",{"answer":47,"createTime":5,"id":48,"options":49,"question":54,"source":26,"type":27},[],1076181504,[50,51,52,53],"去应力退火","完全退火","球化退火","等温退火","将碳钢缓慢加热到500~600℃,保温一段时间,然后缓冷的工艺叫( )",{"answer":56,"createTime":5,"id":57,"options":58,"question":60,"source":26,"type":27},[],1076181549,[50,51,52,59],"再结晶退火","T10钢锻坯切削加工前,应进行的预备热处理是( )",{"answer":62,"createTime":5,"id":63,"options":64,"question":69,"source":26,"type":27},[],1076181595,[65,66,67,68],"T12A","9SiCr","W18Cr4V","CrWMn","制造高速切削刀具的钢常选用( )",{"answer":71,"createTime":5,"id":72,"options":73,"question":78,"source":26,"type":27},[],1076181615,[74,75,76,77],"12Cr13钢","10Cr17钢","12Cr18Ni9钢","40Cr钢","下列材料中,最适合制造气轮机叶片的是( )",{"answer":80,"createTime":5,"id":81,"options":82,"question":87,"source":26,"type":27},[],1076181633,[83,84,85,86],"结构相同、性能不同","结构不同、性能相同","结构和性能都相同","结构和性能都不相同","间隙固溶体与间隙化合物的( )",{"answer":89,"createTime":5,"id":90,"options":91,"question":96,"source":26,"type":27},[],1076181704,[92,93,94,95],"相同","确定不变","不断变化","符合杠杆定律","在发生共晶转变L→α+β时,L、α、β三相的成分为( )",{"answer":98,"createTime":5,"id":6,"options":99,"question":15,"source":26,"type":27},[],[8,9,10,11]]