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单选题 What is the primary function of the railway subgrade
学科：默认课程
时间：2026-05-31 01:17:43
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题目1单选题
Which part of a bridge is responsible for spanning the bridge openingA. SuperstructureB. SubstructureC. FoundationD. Auxiliary Structure
题目2单选题
What is marked with white arrows on the tunnel walls for easy identificationA. The location of drainage facilitiesB. The location of ventilation equipmentC. The cable ductsD. The location of refuge bay
题目3单选题
What characteristic is emphasized about railway maintenance workersA. They are dedicated and committed to their work, regardless of weather conditionsB. They have a weak sense of responsibilityC. They often change jobs frequentlyD. They work only during good weather conditions
题目4单选题
What is the primary function of the railway subgradeA. To carry the weight and absorb the impact of passing trainsB. To provide entertainment for passengersC. To generate electricity for the train's power systemD. To store water for the train's onboard facilities
题目5单选题
What is the function of reinforcement equipment in a railway trackA. To support the rail and fix it in placeB. To connect the joints between railsC. To prevent track creeping and ensure the stability of the track structureD. To enable rolling stock to move from one track to another
题目6单选题
Which of the following statements is TRUE about railway maintenance workersA. D. They don't have any responsibilityB. A. They only work in spring and autumnC. B. They don't need to work in extreme weatherD. C. They safeguard the railway's safety with their hard work
题目7单选题
Why are turnouts considered one of the three weak points in railway tracksA. Because they are located at the ends of tracksB. Because they are prone to various issuesC. Because they are used less frequently than other parts of the trackD. Because they are made of weaker materials
题目8单选题
What are the common defects of concrete tiesA. Poor alignment, wear on the frog and wing railsB. Rolling contact fatigue fissures, wear, corrosionC. Crazing, shoulder damage, and chipping of bottom edgeD. Mud pumping, dirtiness, settlement
题目9单选题
Which part of the turnout is responsible for guiding the train wheels from one rail to anotherA. trackB. Switch RailsC. Check RailsD. Stock Rails
题目10单选题
Which of the following workshops is NOT a part of the railway maintenance sectionA. Bridge and tunnel workshopB. Track workshopC. Comprehensive machine repair workshopD. Electrical engineering workshop
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