[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fQElPogFbYru5_bEED8HaL3vZvLQxlDDxJZREtmJiY58":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":95},[],"2026-04-22 14:02:53",348136777,[8,9,10,11],"Guiding train movement","Bearing wheel loads","Acting as track circuit in electrified railways","Supporting sleepers",{"courseId":13,"courseImg":14,"courseName":15},"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","What are the functions of rails in railway tracks",[18,29,38,47,56,61,68,77,86,96],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],348136768,[22,23,24,25],"Rail web","Rail head","Rail base","Rail joint","Which part of the rail cross-section is mainly responsible for bearing the wheel load","v1",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],348136769,[33,34,35,36],"12.5m, 25m","25m, 75m, 100m","12.5m, 25m, 100m","100m only","According to TB\u002FT 2344.1—2020, what is the standard length of 75kg\u002Fm rail",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":28},[],348136770,[42,43,44,45],"To reduce noise","To allow for thermal expansion","To increase joint strength","To simplify maintenance","What is the primary function of reserved rail gaps at rail joints",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":27,"type":28},[],348136771,[51,52,53,54],"High strength","Good toughness","Low wear resistance","Adequate rigidity","Which of the following is NOT a requirement for rails",{"answer":57,"createTime":5,"id":58,"options":59,"question":60,"source":27,"type":28},[],348136772,[22,23,24,25],"Which part of the rail cross-section is designed to withstand the vertical force from train wheels",{"answer":62,"createTime":5,"id":63,"options":64,"question":67,"source":27,"type":28},[],348136773,[35,34,65,66],"12.5m, 25m, 75m","75m, 100m, 125m","What is the standard length of 75kg\u002Fm rails according to TB\u002FT 2344.1—2020",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":27,"type":28},[],348136774,[72,73,74,75],"Guiding trains forward","Withstanding wheel pressure","Acting as a track circuit in electrified railways","Supporting the entire train body","Which of the following is NOT a function of rails in railway tracks",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":27,"type":28},[],348136775,[81,82,83,84],"To allow for thermal expansion of rails","To reduce noise during train operation","To increase the strength of rail joints","To facilitate rail replacement","What is the principle of reserving rail gaps at rail joints",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":27,"type":95},[],348136776,[90,91,92,93],"Fish plate","Rail bolt","Rail pad","Sleeper","Which of the following are components of a rail joint",1,{"answer":97,"createTime":5,"id":6,"options":98,"question":16,"source":27,"type":95},[],[8,9,10,11]]