【多选题】触电的原因有哪些?
A.
设备不合格,由于设备绝缘损坏,设备金属外壳带电,人体无意接触外壳。
B.
高压线 220kV、110kV、35kV、10kV等的接地点、短路点、跨步电压形成的对人体的伤害。
【单选题】Many students signed up for the _____ race in the sports meeting to be held next week.w
【单选题】不停追问“我是谁”,慢慢形成整合的自我概念,对自己将成为怎样的人产生困惑的这一时期是( )
【单选题】Many students signed up for the _______ race in the sports meeting to be held next week.
【单选题】Many students signed up for the ____race in the sports meeting .