[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fpXZrgQcAuk5KYlexpozTszUgvjLEDwX378A_lW7GRmM":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":11,"question":18,"related":19,"source":27,"type":37},[],"2023-05-10 18:25:05",4272694,[8,9,10],"小于","大于","等于",{"count":12,"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},16,"11cabfc5078e0f93d425983a227a79b3","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6a424efe37af1ccac4e3c5154e79ba75.jpg","机械设计基础","b9f9ad2c5fe44be5a698c6992d6bd9d5","3.6小节测验","设计滚子从动件外凸凸轮机构时,滚子半径要( )凸轮理论轮廓的最小曲率半径",[20,29,38,41,48,54,60,65,71,76],{"answer":21,"createTime":5,"id":22,"options":23,"question":26,"source":27,"type":28},[],4272692,[24,25],"正确","错误","设计凸轮机构时,基圆半径取值越小,压力角越小,凸轮机构传力特性越好","v1",3,{"answer":30,"createTime":5,"id":31,"options":32,"question":36,"source":27,"type":37},[],4272693,[33,34,35],"凸轮上接触点的法线与该点线速度","凸轮上接触点的法线与从动件的运动方向","凸轮上接触点的切线与从动件的运动方向","凸轮机构中的压力角是指( )间的夹角",0,{"answer":39,"createTime":5,"id":6,"options":40,"question":18,"source":27,"type":37},[],[8,9,10],{"answer":42,"createTime":43,"id":44,"options":45,"question":46,"source":27,"type":47},[],"2026-03-10 23:25:52",9738168,[],"一偏置直动平底从动件盘形凸轮机构,平底与从动件运动方向垂直,凸轮为主动件,该机构的压力角=( )°",2,{"answer":49,"createTime":50,"id":51,"options":52,"question":53,"source":27,"type":47},[],"2026-03-09 20:06:31",9738169,[],"凸轮理论轮廓曲线上的点的某点的法线方向(即从动杆的受力方向)与从动杆速度方向之间的夹角称为凸轮在该点的____",{"answer":55,"createTime":56,"id":57,"options":58,"question":59,"source":27,"type":28},[],"2023-05-13 23:26:56",9738170,[24,25],"滚子从动件盘形凸轮机构中,基圆半径和压力角应在凸轮的实际廓线上来度量",{"answer":61,"createTime":50,"id":62,"options":63,"question":64,"source":27,"type":47},[],9742710,[],"在初步设计直动尖顶从动件盘形凸轮机构中发现有自锁现象时,可采用增大()、 适当选取从动件() 等办法来解决",{"answer":66,"createTime":67,"id":68,"options":69,"question":70,"source":27,"type":28},[],"2023-05-13 23:29:40",9742711,[24,25],"凸轮机构的压力角越小,则其动力特性越差,自锁可能性越大",{"answer":72,"createTime":67,"id":73,"options":74,"question":75,"source":27,"type":28},[],9742712,[24,25],"滚子从动件盘形凸轮的压力角必须在实际轮廓曲线上度量",{"answer":77,"createTime":78,"id":79,"options":80,"question":81,"source":27,"type":28},[],"2023-05-22 23:50:36",24990517,[24,25],"平底直动从动件盘形凸轮机构的压力角始终等于零"]