题型：填空题 — What can I offer you? Coffee, tea, orange juice, iced water…? — ______. A. Yes, please. Thank you. B. I don't care. Whatever. C. Go ahead. None of my business. D. Don't worry. Too much trouble. 查看答案
题型：填空题 解决分断空载变压器引起的剩余电流动作保护器误动作的方法是（）。A.选用延时型保护器。B.使用冲击过电压不动作型保护器。C.用正反向阻断电压较高的晶闸管取代较低的晶闸管。D.增强中性线与地的绝缘 查看答案