Intellectual Olympiad in Vehicle Technical Service - 2026 ongoing

Subject: Vehicle Technical Service
Level: II
Category: student
Quiz questions: in Chinese
Example question: 冷车启动后，若发动机怠速不稳且排气管冒出黑烟，最可能的原因是什么？ 冷却液过少, 轮胎气压过高, 混合气过浓, 制动盘磨损