[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fAWi3kHf5X2gTD9110yS0e3ADUoG5rhSC7DB5KiKPc_I":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":32,"type":73},[],"2025-12-08 23:30:22",253286586,[8,9,10,11],"Ag与Pt中的Pt","Ag与Pt中的Ag","Ag与Pd中的Ag","Ag与Pd中的Pd",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},7,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_48670778","第五章 第三节 饰用钯及其合金材料","Ag与Pd,Ag与Pt两个组合,那一种组合中的哪种金属先被腐蚀",[21,34,43,52,60,65,70],{"answer":22,"createTime":5,"id":23,"options":24,"question":31,"source":32,"type":33},[],253286580,[25,26,27,28,29,30],"Cu","Ru","Co","Pb","Ni","Rh","Pt-Pd二元合金强度硬度偏低,因此往往需要添加下列哪些元素来提高强度硬度","v1",1,{"answer":35,"createTime":5,"id":36,"options":37,"question":42,"source":32,"type":33},[],253286581,[38,39,40,41],"工艺性能总体比金、银、铂等贵金属稍差","钯金首饰的检测鉴定标准尚不成熟","易出现质量问题,返修率较高","钯金报价透明度不高","钯金首饰的局限性有哪些",{"answer":44,"createTime":45,"id":46,"options":47,"question":51,"source":32,"type":33},[],"2025-12-07 08:40:06",253286582,[48,49,50],"提高合金的抗晦暗能力","形成更饱和的白色","固溶强化","Pd以纯Pd或Pd-Ag等中间合金的形式作为合金元素加入Au、Ag和Pt等合金中,主要有哪几个方面的作用",{"answer":53,"createTime":45,"id":54,"options":55,"question":58,"source":32,"type":59},[],253286583,[56,57],"正确","错误","铂合金熔炼不能采用石墨坩埚,因为在熔融状态下,Pt和某些合金元素(如Pd)能溶解大量的碳,而在合金凝固过程中碳又以纤维状或片状的石墨形态析出在晶界上,进而使合金变脆",3,{"answer":61,"createTime":45,"id":62,"options":63,"question":64,"source":32,"type":59},[],253286584,[56,57],"钯添加到金中降低了合金的熔点",{"answer":66,"createTime":45,"id":67,"options":68,"question":69,"source":32,"type":59},[],253286585,[56,57],"Ag-Pd合金在液相和固相均无限互溶,弥散强化效果突出,因此钯对银的强化作用很好",{"answer":71,"createTime":5,"id":6,"options":72,"question":19,"source":32,"type":73},[],[8,9,10,11],0]