They were nearly two hours late . By the time they got there, the meeting was almost over. a. They almost were two hours late. b. Almost they were two hours late. c. They were approximately two hours late. d. They were two hours late almost.
【简答题】某厂设有 SL7-3150 ( kVA )变压器一台,高 / 低压侧额定电压为 35/6.3kV , U K %=7 。该变压器通过 35kV 架空线路(长 5km , X 0 =0.4 Ω /km )与无限大容量电力系统相连,试问在变压器高、低压侧分别发生三相短路时的 I K 、 i sh 、 I sh 和 S K 各等于多少?