未来 对于 ( ) 相当于 ( ) 对于 保护
A.历史 动物 B.畅想 惩罚C.探索 环境 D.完善 破坏
参考答案:C
解析: 探索未来;保护环境。
某300MW发电机出口额定电压为20kV,发电机中性点经接地变压器二次侧电阻接地运行,二次侧电压为220V,接地电阻为0.65Ω,接地变压器的过负荷系数为1.3,则接地变压器容量应不小于下列哪项数值?()
A.74.5kVA
B.33.1kVA
C.65.3kVA
D.57.3kVA
Which statement is TRUE().
A.GMDSS radio logs are required to contain entries pertaining to all incidents connected to radio communication service which appear to be of importance to the safety of life at sea
B.All distress communications must be entered in the GMDSS radio log
C.Both of the above
D.None of the above