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单选题 What is the primary function of reserved rail gaps at rail joints
学科：默认课程
时间：2026-04-22 06:02:53
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题目1单选题
Which part of the rail cross-section is mainly responsible for bearing the wheel loadA. Rail webB. Rail headC. Rail baseD. Rail joint
题目2单选题
According to TB/T 2344.1—2020, what is the standard length of 75kg/m railA. 12.5m, 25mB. 25m, 75m, 100mC. 12.5m, 25m, 100mD. 100m only
题目3单选题
What is the primary function of reserved rail gaps at rail jointsA. To reduce noiseB. To allow for thermal expansionC. To increase joint strengthD. To simplify maintenance
题目4单选题
Which of the following is NOT a requirement for railsA. High strengthB. Good toughnessC. Low wear resistanceD. Adequate rigidity
题目5单选题
Which part of the rail cross-section is designed to withstand the vertical force from train wheelsA. Rail webB. Rail headC. Rail baseD. Rail joint
题目6单选题
What is the standard length of 75kg/m rails according to TB/T 2344.1—2020A. 12.5m, 25m, 100mB. 25m, 75m, 100mC. 12.5m, 25m, 75mD. 75m, 100m, 125m
题目7单选题
Which of the following is NOT a function of rails in railway tracksA. Guiding trains forwardB. Withstanding wheel pressureC. Acting as a track circuit in electrified railwaysD. Supporting the entire train body
题目8单选题
What is the principle of reserving rail gaps at rail jointsA. To allow for thermal expansion of railsB. To reduce noise during train operationC. To increase the strength of rail jointsD. To facilitate rail replacement
题目9多选题
Which of the following are components of a rail jointA. Fish plateB. Rail boltC. Rail padD. Sleeper
题目10多选题
What are the functions of rails in railway tracksA. Guiding train movementB. Bearing wheel loadsC. Acting as track circuit in electrified railwaysD. Supporting sleepers
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