在更换机油前,应让发动机组运行一段时间,使在机油箱底部的沉淀物充分与机油混合,以利于其随机油排出。
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If you observe any situation which presents a safety or pollution hazard during fuel transfer operations, which of the following actions should be taken FIRST?()
A. Close the valves at the transfer manifold
B. Notify the person in charge of the shore facility
C. Shut down the transfer operation
D. Sound the fire alarm
进行设备()等工作时应戴绝缘手套。
A. 安装
B. 调试
C. 验电
D. 装拆接地线
库存器材装备保管、保养方面的检查,基层中队每月、大队每三个月检查一次。
A. 正确
B. 错误