[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f_Yd1Gfg3yslpjVQSZMCDudpVErerZ7PKw4LQmhSHkIc":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2025-12-05 10:44:09",251378702,[8,9,10,11],"冷隔越严重","气孔越高","容易浇不足","组织越粗大",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},43,"6ff62bf2880a7c52e0e324d092cc1088","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5aa1e010016a00d72d96151e16aafd59.png","工程训练C","work_40236978","5 铸造章节作业","铸件的壁越厚,其强度越低,这主要是由于壁越厚()",[21,33,42,51,59,67,75,83,86,95],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2025-05-12 00:13:56",187162178,[26,27,28,29],"响应","负载","电源","中间环节","激励而在电路中产生的电压和电流称为()","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],187162179,[37,38,39,40],"电荷","电压","电流","电阻","单位时间流过电路中某一截面的净电荷量称为()",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":31,"type":32},[],251378697,[46,47,48,49],"浇不足","表面粘砂","气孔","砂眼、夹砂","砂型强度低时,除造成胀砂、塌箱外,还会使铸件产生()",{"answer":52,"createTime":5,"id":53,"options":54,"question":58,"source":31,"type":32},[],251378698,[55,56,57],"增加耐火性","增加强度","增加透气性","大型型芯中放焦炭的目的之一是()",{"answer":60,"createTime":5,"id":61,"options":62,"question":66,"source":31,"type":32},[],251378699,[63,64,65,48],"缩孔","夹渣","裂纹","型砂中加入水分过多,型砂湿度太大,铸件可能产生()",{"answer":68,"createTime":5,"id":69,"options":70,"question":74,"source":31,"type":32},[],251378700,[65,71,72,73],"粘砂、硬皮","应力、变形","气孔、浇不足","砂型透气性差,除了会呛火外,还会产生()",{"answer":76,"createTime":5,"id":77,"options":78,"question":82,"source":31,"type":32},[],251378701,[79,80,81],"提高砂型的强度","提高型砂的退让性和透气性","便于起模","型砂中加入木屑的目的是为了()",{"answer":84,"createTime":5,"id":6,"options":85,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":31,"type":32},[],251378703,[90,91,92,93],"焦炭","废钢","新生铁","回炉铁","冲天炉熔炼过程中,为了降低铁水中的含碳量,常在炉料中加入一定量的()",{"answer":96,"createTime":5,"id":97,"options":98,"question":101,"source":31,"type":102},[],251378704,[99,100],"正确","错误","负压实型铸造容易产生气孔、渗碳、错箱、砂眼等缺陷",3]