对PDC主机和基础结构主机，除可以使用命令行外，还可以用（）。 ["AD用户和计算机","AD域和信任关系","计算机管理","控制台"]
依据华电集团《电力安全生产工作规定》，电力生产类企业是指什么企业？
The height of a VHF radio antenna is more important than the power output wattage of the radio because（）. ["VHF communications are basically line of sight","the air is more dense the higher you go","salt water is a poor conductor of sound","sea water absorbs the radiated energy"]
争夺主机角色成功时，一旦角色被剥夺，该DC只能永远消失，但（）除外。 ["DC主机","基础结构主机","架构主机","RID主机"]
依据华电集团《电力安全生产工作规定》，短期用工应主要从事什么岗位的工作？
依据华电集团《电力生产安全监督规定（A版）》，各单位在承、发包工作中签订的安全生产管理协议需要明确什么内容？
