[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f5dH7egIqn0q2GLJgbOXNo85I_JePKJ1XucTVbn6l6Ws":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-11-27 19:04:34",243497514,[8,9,10,11],"增加","减小","不变","增加或减小",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},10,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","9740b863185048e8bb86a15104d0a9b0","蜗杆传动章节测试","在标准蜗轮传动中,蜗杆头数一定,加大蜗杆特性系数将使传动效率",[21,32,40,49,58,61,70,79,88,97],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],243497510,[25,26,27,28],"较大的蜗杆直径系数","较大的蜗杆分度圆导程角","较小的模数","较少的蜗杆头数","对于传递动力的蜗杆传动,为了提高传动效率,在一定限速内可采用","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":39,"source":30,"type":31},[],243497511,[36,37,38],"端面","轴向","法向","蜗杆传动中,是以蜗杆的轴向参数、蜗轮的 参数为标准值",{"answer":41,"createTime":5,"id":42,"options":43,"question":48,"source":30,"type":31},[],243497512,[44,45,46,47],"ma1=mt2","aa1=aa2","B1=B2","蜗轮螺旋角和蜗杆导程角相等,且旋向相同","蜗杆传动的正确啮合条件中,应除去",{"answer":50,"createTime":5,"id":51,"options":52,"question":57,"source":30,"type":31},[],243497513,[53,54,55,56],"钢","铸铁","青铜","非金属材料","设计蜗杆传动时,通常选择蜗杆材料为钢,蜗轮材料为 ,以减小摩擦力",{"answer":59,"createTime":5,"id":6,"options":60,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":62,"createTime":5,"id":63,"options":64,"question":69,"source":30,"type":31},[],243497515,[65,66,67,68],"防止润滑油受热后外溢,造成环境污染","防止润滑油温度过高使润滑条件恶化","防止蜗轮材料在高温下力学性能下降","防止蜗轮蜗杆发生热变形后正确啮合受到破坏","对闭式蜗杆传动进行热平衡计算,其主要目的是",{"answer":71,"createTime":5,"id":72,"options":73,"question":78,"source":30,"type":31},[],243497516,[74,75,76,77],"加工方便","提高精度","节约有色金属","减轻重量","蜗轮轮缘与轮毂采用不同材料的目的是为了",{"answer":80,"createTime":5,"id":81,"options":82,"question":87,"source":30,"type":31},[],243497517,[83,84,85,86],"钢和铸铁","钢和青铜","钢和铝合金","钢和钢","蜗杆传动较为理想的材料组合是",{"answer":89,"createTime":5,"id":90,"options":91,"question":96,"source":30,"type":31},[],243497518,[92,93,94,95],"蜗杆轴上","蜗轮轴上","较高的(上面的)轴上","较低的(下面的)轴上","蜗杆减速器采用风扇冷却时,风扇应装在",{"answer":98,"createTime":5,"id":99,"options":100,"question":105,"source":30,"type":31},[],243497519,[101,102,103,104],"齿面点蚀","齿面磨损","齿面胶合","蜗轮轮齿折断","蜗轮材料为HT200的开式蜗杆传动,其主要失效形式是"]