与特殊紧急情况,如何解锁操作?
用户组织的文件称为()。
Which is false about engine trials?() engine trails should be done after finishing the operation of turning the engine with the turning gear and starting the engine on air briefly。 in the operation of engine trails, the main engine should be running in low-speed。 As to the ship equipment with twin main engine, engine trials should be done with one engine ahead and another engine astern at the same time。 the order “engine trials” should be given by the bridge。
单件生产类型特点是()。 产量少或是单件,工作地专业化程度高,对工人技术水平要求高,设备通用性差。 产量少或是单件,工作地专业化程度低,对工人技术水平要求高,设备通用性差。 产量少或是单件,工作地专业化程度低,对工人技术水平要求高,设备通用性好。
为什么变电站综合自动化系统要设置统一的对时装置?
对风险预警内容未消除的,超过规定期限后,由()