[问答题] 依据华电集团《电力安全工作规程》（热力和机械部分）对起重吊具的滑车或滑车组有何要求？

Your vessel is equipped with a fixed CO2 system and a fire main system. In the event of an electrical fire in the engine room what is the correct procedure for fighting the fire?（） ["Use the CO_{2<\/sub> system and evacuate the engine room","Use the fire main system and evacuate the engine room","Evacuate the engine room and use the CO2<\/sub> system","Evacuate the engine room and use the fire main system"] 简要说明移动软交换体系和固定软交换体系的不同点。 行政秩序是行政法律规范实行与实现的结果，是行政活动基本方面的法律化和制度化。（） 欧美国家社会保障制度的基础性结构特征有（） ["强制性","基金性","保障性","普遍性"] 效果指公共服务符合政策目标的程度、效果关心的是“目标或结果”而非“投入”的项目。（） 依据华电集团《电力安全工作规程》（热力和机械部分）对起重吊具的滑车或滑车组有何要求？}