[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fgkVumvxxt-pEgssCfdp5aOtGybuwcrL8kAybmid5s1Q":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-06-19 16:45:41",71895641,[8,9,10,11],"塑件的线尺寸收缩","后收缩","成型收缩","收缩方向性",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},78,"d25dd60ea7f81b7cfaadac000c8f7b7e","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F626ce083d6e892c7af1ce09b8da26f40.png","塑料模具设计","dedf76b967394217a1780ca632085690","项目一 客观题 认识塑料及塑料模具","塑件脱模后产生的收缩称为",[21,32,41,48,57,60,69,78,87,96],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],71895637,[25,26,27,28],"工程塑料","热塑性塑料","热固性塑料","特种塑料","PE、PP、PS等属于","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],71895638,[36,37,38,39],"注射成型","压缩成型","挤出成型","气动成型","成型PVC下水道塑料管采用",{"answer":42,"createTime":5,"id":43,"options":44,"question":47,"source":30,"type":31},[],71895639,[45,37,46,39],"压塑成型","压注成型","生产矿泉水瓶宜选用",{"answer":49,"createTime":5,"id":50,"options":51,"question":56,"source":30,"type":31},[],71895640,[52,53,54,55],"液态向固态变化","固态向液态变化","只有物理变化,没有化学变化","先从固态向粘流态,再从粘流态通过成形向固态变化","热塑性塑料注射成形过程中,通常要进行物态变化,其变化过程是",{"answer":58,"createTime":5,"id":6,"options":59,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":61,"createTime":5,"id":62,"options":63,"question":68,"source":30,"type":31},[],71895642,[64,65,66,67],"降低","加大","不变","以上都不对","塑料粘度与注射压力、塑料温直接相关.一般料温升高时,可( )注射压力以达到相同的流道效果",{"answer":70,"createTime":5,"id":71,"options":72,"question":77,"source":30,"type":31},[],71895643,[73,74,75,76],"结晶","取向","交联","收缩","热固性塑料成型过程不可逆是因为成型过程伴随着",{"answer":79,"createTime":5,"id":80,"options":81,"question":86,"source":30,"type":31},[],71895644,[82,83,84,85],"粘流","高弹","凝固","玻璃","热流道注射模的流道中塑料保持 状态",{"answer":88,"createTime":5,"id":89,"options":90,"question":95,"source":30,"type":31},[],71895645,[91,92,93,94],"拉西格流动值","熔融指数","螺旋线长度","流长比","热固性塑料流动性通常用( )表示",{"answer":97,"createTime":5,"id":98,"options":99,"question":104,"source":30,"type":31},[],71895646,[100,101,102,103],"绝缘性好","密度大","绝缘性能好","绝热性能好","下列关于塑料表述不准确的是"]