[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fwdtHmgrZE5UZijYZttnwgvbb-Y2HSryIDPa3ZlQXohg":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":17,"related":18,"source":24,"type":25},[],"2025-06-08 22:28:32",196501194,[8,9],"正确","错误",{"count":11,"courseId":12,"courseImg":13,"courseName":14,"workId":15,"workName":16},35,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_44143775","新建作业20250608165638","铸造生产上为控制晶粒细小,使得力学性能更突出,可采用降低过冷度、变质处理等方法",[19,26,31,36,41,46,51,54,59,64],{"answer":20,"createTime":5,"id":21,"options":22,"question":23,"source":24,"type":25},[],196501185,[8,9],"要检测淬火高碳钢零件的硬度,一般常选用洛氏硬度来测试","v1",3,{"answer":27,"createTime":5,"id":28,"options":29,"question":30,"source":24,"type":25},[],196501187,[8,9],"在金属材料室温拉伸试验中,可以检测金属材料的强度指标如屈服强度和抗拉强度,还可以检测塑性指标如断后伸长率和断面收缩率",{"answer":32,"createTime":5,"id":33,"options":34,"question":35,"source":24,"type":25},[],196501189,[8,9],"布氏硬度检测结果150HBW10\u002F1000\u002F30表示的含义是用直径为 10mm 的硬质合金球,在1000kgf的作用下,保持30秒时间,测得的布氏硬度值为150",{"answer":37,"createTime":5,"id":38,"options":39,"question":40,"source":24,"type":25},[],196501191,[8,9],"金属晶格的基本类型有面心立方与密排六方两种晶格结构;一般认为,金属的晶格结构与性能没有太大关系",{"answer":42,"createTime":5,"id":43,"options":44,"question":45,"source":24,"type":25},[],196501192,[8,9],"金属的实际晶体结构中,常见有三种缺陷,分别是点缺陷、线缺陷和面缺陷",{"answer":47,"createTime":5,"id":48,"options":49,"question":50,"source":24,"type":25},[],196501193,[8,9],"金属结晶的过程实际上是一个形成晶核和晶核长大的过程",{"answer":52,"createTime":5,"id":6,"options":53,"question":17,"source":24,"type":25},[],[8,9],{"answer":55,"createTime":5,"id":56,"options":57,"question":58,"source":24,"type":25},[],196501195,[8,9],"在一定条件下,从液相中同时结晶出两种新固相的,称为共析反应",{"answer":60,"createTime":5,"id":61,"options":62,"question":63,"source":24,"type":25},[],196501196,[8,9],"碳固溶于&gamma;-Fe中形成的固溶体称为珠光体;碳固溶于&alpha; -Fe 中形成的固溶体称为奥氏体;它们实际上都是间隙固溶体",{"answer":65,"createTime":5,"id":66,"options":67,"question":68,"source":24,"type":25},[],196501197,[8,9],"钢的热处理过程一般有四个阶段组成,分别是升温、液化、保温和降温过程"]