有限空间内进行焊接作业完成后,焊接人员离开现场前,应检查并确认现场无火种留下。
A. 正确
B. 错误
TippingPoint IPS的接口link down同步状态中,哪种状态是一端断开,另外一端不做出任何响应?()
A. Synchronization
Breaker
C. Wire
D. Hu
因地形、地物影响视线的地方,预告、遮断信号机的显示距离,在最坏条件下不得少于()m。
A. 200
B. 300
C. 400
D. 500
In the event of minor emergencies when the machinery spaces unattended () will be informed of malfunction in the machinery by his cabin monitor.
A. the chief engineer
B. the engineer on cabin watch
C. the bridge officer on watch
D. the master