A. electrical fire in the engine room B. oil fire in the engine room bilges C. oil fire involving a grade "A" petroleum product D. mattress fire in a stateroom
A. 界位过高 B. 界位过低 C. 引线堵塞 D. 压力波动
A. 正确 B. 错误
A. 1 B. 2 C. 3 D. 4