危险货物运输技术 - 2026 进行中

科目: 危险货物运输技术
级别: X
类别: 大学生
测试题目: 英语
问题示例: A substance causes severe, irreversible damage to skin and corrodes steel during transport. Which hazard class should normally be assigned as its primary class? Class 3, Class 8, Class 6.1, Class 5.1