为了避免发生复制冲突，通过让一个单域控制器负责操作，一些操作可用（）完成。
依据华电集团《电力安全生产工作规定》哪些人员应定期进行仿真系统培训？
下列（）种泡沫不能用于液下喷射灭火。 ["蛋白泡沫","氟蛋白泡沫","水成膜泡沫","成膜氟蛋白泡沫"]
The present voyage of my ship began at the port of Shanghai after loading 8 000 tons of Cargo on board and ended after discharging the Cargo at the port of Hong Kong，which was（）. ["the port of destination","the next port of call","the port of arrival","the last port of call"]
依据华电集团《电力安全生产工作规定》，一般事故隐患是如何定义的？
依据华电集团《电力安全生产工作规定》，发电企业安全员是如何设置的？
