《防止电力生产重大事故的二十五项重点要求》：防止高处坠落事故中对洞口的防护要求有哪些？
CAN YOU BEACH means（）. ["can you go to the beach","can you run the vessel upon a beach to prevent its sinking in deep water","can you handle the vessel along the beach","can berth along the beach"]
简述抽样检查的步骤。
Can you（）survivors? ["take out","pick up","stretch out","draw out"]
《防止电力生产重大事故的二十五项重点要求》：防止高处坠落事故中对恶劣天气下作业的要求有哪些？
简述社会保险缴费稽核的内容。
